дз формулы приведения Quiz: 12 Practice Questions (Grade 9)

12 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

$\sin170\degree=$

$\cos10\degree$

$-\cos10\degree$

$\sin10\degree$

$-\sin10\degree$

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

$\cos290\degree=$

$\sin20\degree$

$-\cos20\degree$

$\cos20\degree$

$-\sin20\degree$

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

$\sin350\degree=$

$-\sin80\degree$

$-\cos80\degree$

$\cos80\degree$

$\sin80\degree$

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Знаки синуса

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Знаки косинуса

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Знаки тангенса и котангенса

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

$\sin^2x+\cos^2x=$

0

1

$\frac{\pi}{2}$

-1

8.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

$\cos\ \frac{\pi}{2}=$

$\frac{1}{2}$

$\frac{\sqrt{3}}{2}$

$\frac{\sqrt{2}}{2}$

0

9.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

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

$1$

$\frac{\sqrt{3}}{3}$

$\sqrt{3}$

0

10.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

$1+tg^2\alpha=?$

$\frac{\cos\alpha}{\sin\alpha}$

$\frac{1}{\sin^2\alpha}$

$\frac{\sin\alpha}{\cos\alpha}$

$\frac{1}{\cos^2\alpha}$

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дз формулы приведения

sin⁡170°=\sin170\degree=sin170°=

cos⁡290°=\cos290\degree=cos290°=

sin⁡350°=\sin350\degree=sin350°=

Знаки синуса

Знаки косинуса

Знаки тангенса и котангенса

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

cos⁡ π2=\cos\ \frac{\pi}{2}=cos 2π​=

ctg⁡ π6=\operatorname{ctg}\ \frac{\pi}{6}=ctg 6π​=

1+tg2α=?1+tg^2\alpha=?1+tg2α=?

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$\sin170\degree=$

$\cos290\degree=$

$\sin350\degree=$

$\sin^2x+\cos^2x=$

$\cos\ \frac{\pi}{2}=$

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

$1+tg^2\alpha=?$