Найдите длину вектора a , → \overrightarrow{a,} a , <path d="M0 241v40h399891c-47.3 35.3-84 78-110 128 -16.7 32-27.7 63.7-33 95 0 1.3-.2 2.7-.5 4-.3 1.3-.5 2.3-.5 3 0 7.3 6.7 11 20 11 8 0 13.2-.8 15.5-2.5 2.3-1.7 4.2-5.5 5.5-11.5 2-13.3 5.7-27 11-41 14.7-44.7 39-84.5 73-119.5s73.7-60.2 119-75.5c6-2 9-5.7 9-11s-3-9-9-11c-45.3-15.3-85 -40.5-119-75.5s-58.3-74.8-73-119.5c-4.7-14-8.3-27.3-11-40-1.3-6.7-3.2-10.8-5.5 -12.5-2.3-1.7-7.5-2.5-15.5-2.5-14 0-21 3.7-21 11 0 2 2 10.3 6 25 20.7 83.3 67 151.7 139 205zm0 0v40h399900v-40z"> если a → { 1 ; − 1 ; 2 } \overrightarrow{a}\left\{1;\ -1;\ 2\right\} a <path d="M0 241v40h399891c-47.3 35.3-84 78-110 128 -16.7 32-27.7 63.7-33 95 0 1.3-.2 2.7-.5 4-.3 1.3-.5 2.3-.5 3 0 7.3 6.7 11 20 11 8 0 13.2-.8 15.5-2.5 2.3-1.7 4.2-5.5 5.5-11.5 2-13.3 5.7-27 11-41 14.7-44.7 39-84.5 73-119.5s73.7-60.2 119-75.5c6-2 9-5.7 9-11s-3-9-9-11c-45.3-15.3-85 -40.5-119-75.5s-58.3-74.8-73-119.5c-4.7-14-8.3-27.3-11-40-1.3-6.7-3.2-10.8-5.5 -12.5-2.3-1.7-7.5-2.5-15.5-2.5-14 0-21 3.7-21 11 0 2 2 10.3 6 25 20.7 83.3 67 151.7 139 205zm0 0v40h399900v-40z"> { 1 ; − 1 ; 2 } .

6 \sqrt{6} 6 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

Найдите длину вектора n → = 2 a → − 3 b → \overrightarrow{n}=2\overrightarrow{a}-3\overrightarrow{b} n <path d="M0 241v40h399891c-47.3 35.3-84 78-110 128 -16.7 32-27.7 63.7-33 95 0 1.3-.2 2.7-.5 4-.3 1.3-.5 2.3-.5 3 0 7.3 6.7 11 20 11 8 0 13.2-.8 15.5-2.5 2.3-1.7 4.2-5.5 5.5-11.5 2-13.3 5.7-27 11-41 14.7-44.7 39-84.5 73-119.5s73.7-60.2 119-75.5c6-2 9-5.7 9-11s-3-9-9-11c-45.3-15.3-85 -40.5-119-75.5s-58.3-74.8-73-119.5c-4.7-14-8.3-27.3-11-40-1.3-6.7-3.2-10.8-5.5 -12.5-2.3-1.7-7.5-2.5-15.5-2.5-14 0-21 3.7-21 11 0 2 2 10.3 6 25 20.7 83.3 67 151.7 139 205zm0 0v40h399900v-40z"> = 2 a <path d="M0 241v40h399891c-47.3 35.3-84 78-110 128 -16.7 32-27.7 63.7-33 95 0 1.3-.2 2.7-.5 4-.3 1.3-.5 2.3-.5 3 0 7.3 6.7 11 20 11 8 0 13.2-.8 15.5-2.5 2.3-1.7 4.2-5.5 5.5-11.5 2-13.3 5.7-27 11-41 14.7-44.7 39-84.5 73-119.5s73.7-60.2 119-75.5c6-2 9-5.7 9-11s-3-9-9-11c-45.3-15.3-85 -40.5-119-75.5s-58.3-74.8-73-119.5c-4.7-14-8.3-27.3-11-40-1.3-6.7-3.2-10.8-5.5 -12.5-2.3-1.7-7.5-2.5-15.5-2.5-14 0-21 3.7-21 11 0 2 2 10.3 6 25 20.7 83.3 67 151.7 139 205zm0 0v40h399900v-40z"> − 3 b <path d="M0 241v40h399891c-47.3 35.3-84 78-110 128 -16.7 32-27.7 63.7-33 95 0 1.3-.2 2.7-.5 4-.3 1.3-.5 2.3-.5 3 0 7.3 6.7 11 20 11 8 0 13.2-.8 15.5-2.5 2.3-1.7 4.2-5.5 5.5-11.5 2-13.3 5.7-27 11-41 14.7-44.7 39-84.5 73-119.5s73.7-60.2 119-75.5c6-2 9-5.7 9-11s-3-9-9-11c-45.3-15.3-85 -40.5-119-75.5s-58.3-74.8-73-119.5c-4.7-14-8.3-27.3-11-40-1.3-6.7-3.2-10.8-5.5 -12.5-2.3-1.7-7.5-2.5-15.5-2.5-14 0-21 3.7-21 11 0 2 2 10.3 6 25 20.7 83.3 67 151.7 139 205zm0 0v40h399900v-40z"> ,если a → { 1 ; − 1 ; 2 } и b → { 2 ; 2 ; 0 } \overrightarrow{a}\left\{1;\ -1;\ 2\right\}\ и\ \overrightarrow{b}\left\{2;\ 2;\ 0\right\} a <path d="M0 241v40h399891c-47.3 35.3-84 78-110 128 -16.7 32-27.7 63.7-33 95 0 1.3-.2 2.7-.5 4-.3 1.3-.5 2.3-.5 3 0 7.3 6.7 11 20 11 8 0 13.2-.8 15.5-2.5 2.3-1.7 4.2-5.5 5.5-11.5 2-13.3 5.7-27 11-41 14.7-44.7 39-84.5 73-119.5s73.7-60.2 119-75.5c6-2 9-5.7 9-11s-3-9-9-11c-45.3-15.3-85 -40.5-119-75.5s-58.3-74.8-73-119.5c-4.7-14-8.3-27.3-11-40-1.3-6.7-3.2-10.8-5.5 -12.5-2.3-1.7-7.5-2.5-15.5-2.5-14 0-21 3.7-21 11 0 2 2 10.3 6 25 20.7 83.3 67 151.7 139 205zm0 0v40h399900v-40z"> { 1 ; − 1 ; 2 } и b <path d="M0 241v40h399891c-47.3 35.3-84 78-110 128 -16.7 32-27.7 63.7-33 95 0 1.3-.2 2.7-.5 4-.3 1.3-.5 2.3-.5 3 0 7.3 6.7 11 20 11 8 0 13.2-.8 15.5-2.5 2.3-1.7 4.2-5.5 5.5-11.5 2-13.3 5.7-27 11-41 14.7-44.7 39-84.5 73-119.5s73.7-60.2 119-75.5c6-2 9-5.7 9-11s-3-9-9-11c-45.3-15.3-85 -40.5-119-75.5s-58.3-74.8-73-119.5c-4.7-14-8.3-27.3-11-40-1.3-6.7-3.2-10.8-5.5 -12.5-2.3-1.7-7.5-2.5-15.5-2.5-14 0-21 3.7-21 11 0 2 2 10.3 6 25 20.7 83.3 67 151.7 139 205zm0 0v40h399900v-40z"> { 2 ; 2 ; 0 }

4 6 4\sqrt{6} 4 6 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

8 3 8\sqrt{3} 8 3 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

6 2 6\sqrt{2} 6 2 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

8 6 8\sqrt{6} 8 6 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

Даны точки A ( 3 ; − 2 ; 4 ) , B ( 2 ; − 3 ; 3 ) , C ( 1 ; 4 ; − 2 ) A\left(3;\ -2;\ 4\right),\ B\left(2;\ -3;\ 3\right),\ C\left(1;\ 4;\ -2\right) A ( 3 ; − 2 ; 4 ) , B ( 2 ; − 3 ; 3 ) , C ( 1 ; 4 ; − 2 ) . Найдите расстояние от точки B до середины отрезка AC.

2 5 2\sqrt{5} 2 5 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

2 2 2\sqrt{2} 2 2 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

21 \sqrt{21} 2 1 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

По данной формуле вычисляется?

Вычисление координат вектора

Скалярное произведение векторов

Найдите скалярное произведение векторов a → \overrightarrow{a}\ a <path d="M0 241v40h399891c-47.3 35.3-84 78-110 128 -16.7 32-27.7 63.7-33 95 0 1.3-.2 2.7-.5 4-.3 1.3-.5 2.3-.5 3 0 7.3 6.7 11 20 11 8 0 13.2-.8 15.5-2.5 2.3-1.7 4.2-5.5 5.5-11.5 2-13.3 5.7-27 11-41 14.7-44.7 39-84.5 73-119.5s73.7-60.2 119-75.5c6-2 9-5.7 9-11s-3-9-9-11c-45.3-15.3-85 -40.5-119-75.5s-58.3-74.8-73-119.5c-4.7-14-8.3-27.3-11-40-1.3-6.7-3.2-10.8-5.5 -12.5-2.3-1.7-7.5-2.5-15.5-2.5-14 0-21 3.7-21 11 0 2 2 10.3 6 25 20.7 83.3 67 151.7 139 205zm0 0v40h399900v-40z"> и b → \overrightarrow{b}\ b <path d="M0 241v40h399891c-47.3 35.3-84 78-110 128 -16.7 32-27.7 63.7-33 95 0 1.3-.2 2.7-.5 4-.3 1.3-.5 2.3-.5 3 0 7.3 6.7 11 20 11 8 0 13.2-.8 15.5-2.5 2.3-1.7 4.2-5.5 5.5-11.5 2-13.3 5.7-27 11-41 14.7-44.7 39-84.5 73-119.5s73.7-60.2 119-75.5c6-2 9-5.7 9-11s-3-9-9-11c-45.3-15.3-85 -40.5-119-75.5s-58.3-74.8-73-119.5c-4.7-14-8.3-27.3-11-40-1.3-6.7-3.2-10.8-5.5 -12.5-2.3-1.7-7.5-2.5-15.5-2.5-14 0-21 3.7-21 11 0 2 2 10.3 6 25 20.7 83.3 67 151.7 139 205zm0 0v40h399900v-40z"> , если ∣ a ⃗ ∣ = 3 , ∣ b ⃗ ∣ = 4 , ∠ ( a ⃗ , b ⃗ ) = 12 0 ° . ∣a⃗∣=3,∣b⃗∣=4,∠(a⃗,b⃗)=120^{\degree}. ∣ a ⃗ ∣ = 3 , ∣ b ⃗ ∣ = 4 , ∠ ( a ⃗ , b ⃗ ) = 1 2 0 ° .

− 6 3 -6\sqrt{3} − 6 3 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

6 3 6\sqrt{3} 6 3 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

контрольная 11 геометрия

Authored by Ирина Екименко

Mathematics

11th Grade

Used 9+ times

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Найдите координаты вектора $\overrightarrow{AB}$ , если $A(2;-3;-11)$ , $B(3;-5;-7)$

{6; 15; 77}

{5; -8; -18}

{1; -2; 4}

{-1; -2; -4}

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Найдите координаты точки $B$ , если $A\left(-3;\ 2;\ -1\right)$ и $\overrightarrow{AB}\left\{2;\ -3;\ 5\right\}$

(5; -5; 6)

(1; 1; -4)

(1; -1; 4)

(-1; -1; 4)

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Найдите длину вектора $\overrightarrow{a,}$ если $\overrightarrow{a}\left\{1;\ -1;\ 2\right\}$ .

$\sqrt{6}$

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Найдите длину вектора $\overrightarrow{n}=2\overrightarrow{a}-3\overrightarrow{b}$ ,если $\overrightarrow{a}\left\{1;\ -1;\ 2\right\}\ и\ \overrightarrow{b}\left\{2;\ 2;\ 0\right\}$

$8\sqrt{3}$

$6\sqrt{2}$

$8\sqrt{6}$

$4\sqrt{6}$

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Даны векторы $\overrightarrow{a}\left\{2;\ -1;\ 3\right\}\ и\ \overrightarrow{b}\left\{-3;\ 2;\ 1\right\}$ .
Выберите вектор, коллинеарный вектору $\overrightarrow{a}-\overrightarrow{b}$ .

{5; 1; 2}

{-10; 6; -4}

{15; -9; -6}

{-1; 1; 4}

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Точка M - середина отрезка AC.
$M\left(2;\ 1;\ 1\right),\ A\left(3;\ -2;\ 4\right)$ .
Найдите координаты точки C.

(2,5; -0,5; 2,5)

(1; -3; 3)

(1; 4; -2)

(4; 0; -2)

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Даны точки $A\left(3;\ -2;\ 4\right),\ B\left(2;\ -3;\ 3\right),\ C\left(1;\ 4;\ -2\right)$ .
Найдите расстояние от точки B до середины отрезка AC.

$2\sqrt{2}$

$\sqrt{21}$

$2\sqrt{5}$

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контрольная 11 геометрия

Найдите координаты вектора $\overrightarrow{AB}$ , если $A(2;-3;-11)$ , $B(3;-5;-7)$

Найдите координаты точки $B$ , если $A\left(-3;\ 2;\ -1\right)$ и $\overrightarrow{AB}\left\{2;\ -3;\ 5\right\}$

Найдите длину вектора $\overrightarrow{a,}$ если $\overrightarrow{a}\left\{1;\ -1;\ 2\right\}$ .

Найдите длину вектора $\overrightarrow{n}=2\overrightarrow{a}-3\overrightarrow{b}$ ,если $\overrightarrow{a}\left\{1;\ -1;\ 2\right\}\ и\ \overrightarrow{b}\left\{2;\ 2;\ 0\right\}$

Даны векторы $\overrightarrow{a}\left\{2;\ -1;\ 3\right\}\ и\ \overrightarrow{b}\left\{-3;\ 2;\ 1\right\}$ .
Выберите вектор, коллинеарный вектору $\overrightarrow{a}-\overrightarrow{b}$ .

Точка M - середина отрезка AC.
$M\left(2;\ 1;\ 1\right),\ A\left(3;\ -2;\ 4\right)$ .
Найдите координаты точки C.

Даны точки $A\left(3;\ -2;\ 4\right),\ B\left(2;\ -3;\ 3\right),\ C\left(1;\ 4;\ -2\right)$ .
Найдите расстояние от точки B до середины отрезка AC.

Дан куб ABCDA₁B₁C₁D₁ . Найдите угол между DC1 и СВ.

Ось Х называется

Ось Y называется

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контрольная 11 геометрия

Найдите координаты вектора AB→\overrightarrow{AB}AB , если A(2;−3;−11)A(2;-3;-11)A(2;−3;−11) , B(3;−5;−7)B(3;-5;-7)B(3;−5;−7)

Найдите координаты точки BBB , если A(−3; 2; −1)A\left(-3;\ 2;\ -1\right)A(−3; 2; −1) и AB→{2; −3; 5}\overrightarrow{AB}\left\{2;\ -3;\ 5\right\}AB{2; −3; 5}

Найдите длину вектора a,→\overrightarrow{a,}a,​ если a→{1; −1; 2}\overrightarrow{a}\left\{1;\ -1;\ 2\right\}a{1; −1; 2} .

Найдите длину вектора n→=2a→−3b→\overrightarrow{n}=2\overrightarrow{a}-3\overrightarrow{b}n=2a−3b ,если a→{1; −1; 2} и b→{2; 2; 0}\overrightarrow{a}\left\{1;\ -1;\ 2\right\}\ и\ \overrightarrow{b}\left\{2;\ 2;\ 0\right\}a{1; −1; 2} и b{2; 2; 0}

Точка M - середина отрезка AC. M(2; 1; 1), A(3; −2; 4)M\left(2;\ 1;\ 1\right),\ A\left(3;\ -2;\ 4\right)M(2; 1; 1), A(3; −2; 4) .Найдите координаты точки C.

Даны точки A(3; −2; 4), B(2; −3; 3), C(1; 4; −2)A\left(3;\ -2;\ 4\right),\ B\left(2;\ -3;\ 3\right),\ C\left(1;\ 4;\ -2\right)A(3; −2; 4), B(2; −3; 3), C(1; 4; −2) .Найдите расстояние от точки B до середины отрезка AC.

Дан куб ABCDA₁B₁C₁D₁ . Найдите угол между DC1 и СВ.

Ось Х называется

Ось Y называется

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Найдите координаты вектора $\overrightarrow{AB}$ , если $A(2;-3;-11)$ , $B(3;-5;-7)$

Найдите координаты точки $B$ , если $A\left(-3;\ 2;\ -1\right)$ и $\overrightarrow{AB}\left\{2;\ -3;\ 5\right\}$

Найдите длину вектора $\overrightarrow{a,}$ если $\overrightarrow{a}\left\{1;\ -1;\ 2\right\}$ .

Найдите длину вектора $\overrightarrow{n}=2\overrightarrow{a}-3\overrightarrow{b}$ ,если $\overrightarrow{a}\left\{1;\ -1;\ 2\right\}\ и\ \overrightarrow{b}\left\{2;\ 2;\ 0\right\}$

Точка M - середина отрезка AC.
$M\left(2;\ 1;\ 1\right),\ A\left(3;\ -2;\ 4\right)$ .
Найдите координаты точки C.

Даны точки $A\left(3;\ -2;\ 4\right),\ B\left(2;\ -3;\ 3\right),\ C\left(1;\ 4;\ -2\right)$ .
Найдите расстояние от точки B до середины отрезка AC.