тригонометрия

тригонометрия

10th Grade

12 Qs

quiz-placeholder

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тригонометрия

тригонометрия

Assessment

Quiz

Mathematics

10th Grade

Practice Problem

Hard

Created by

Ирина Васина

Used 1K+ times

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12 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

основное тригонометрическое тождество

sin2x +cos2x=1\sin^2x\ +\cos^2x=1

1+tg2x=1cos2x1+tg^2x=\frac{1}{\cos^2x}

sin2x+cos2y=1\sin^2x+\cos^2y=1

tgx×ctgx=1tgx\times\operatorname{ctg}x=1

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 sin π3=\sin\ \frac{\pi}{3}=  

 12\frac{1}{2}  

 32\frac{\sqrt{3}}{2}  

 22\frac{\sqrt{2}}{2}  

0

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 cos π4=\cos\ \frac{\pi}{4}=  

 12\frac{1}{2}  

 32\frac{\sqrt{3}}{2}  

 22\frac{\sqrt{2}}{2}  

0

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 cos π2=\cos\ \frac{\pi}{2}=  

 12\frac{1}{2}  

 32\frac{\sqrt{3}}{2}  

 22\frac{\sqrt{2}}{2}  

0

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 tg π6=tg\ \frac{\pi}{6}=  

 11  

 33\frac{\sqrt{3}}{3}  

 3\sqrt{3}  

0

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 ctg π6=\operatorname{ctg}\ \frac{\pi}{6}=  

 11  

 33\frac{\sqrt{3}}{3}  

 3\sqrt{3}  

0

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 Решение уравнения sinx=aРешение\ уравнения\ \sin x=a  

 x=arcsina+πk; kNx=\arcsin a+\pi k;\ k\in N  

 x=(1)karcsina+2πk: kNx=\left(-1\right)^k\arcsin a+2\pi k:\ k\in N  

 x=(1)karcsina+πk: kNx=\left(-1\right)^k\arcsin a+\pi k:\ k\in N  

 x=(1)arcsina+πk: kNx=\left(-1\right)\arcsin a+\pi k:\ k\in N  

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