Free Printable 10 класс - Формулы приведения

1.

$\sin\left(\pi+\alpha\right)=$

a)

$\sin\alpha$

b)

$-\sin\alpha$

c)

$-\cos\alpha$

d)

$\cos\alpha$

2.

$Cos(2\pi-\alpha)=$

a)

$\sin\alpha$

b)

$-\sin\alpha$

c)

$\cos\alpha$

d)

$-\cos\alpha$

3.

$tg\left(\pi+\alpha\right)=$

a)

$tg\ \alpha$

b)

$-tg\ \alpha$

c)

$\operatorname{ctg}\alpha$

d)

$-\operatorname{ctg}\alpha$

4.

$\operatorname{ctg}\left(\frac{\pi}{2}+\alpha\right)=$

a)

$\operatorname{ctg}\alpha$

b)

$-\operatorname{ctg}\alpha$

c)

$tg\ \alpha$

d)

$-tg\ \alpha$

5.

$\cos\left(-\alpha+\frac{3\pi}{2}\right)=$

a)

$\cos\alpha$

b)

$-\cos\alpha$

c)

$\sin\alpha$

d)

$-\sin\alpha$

6.

Вычислите $\sin135\degree$

a)

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

b)

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

c)

$1$

d)

$-1$

7.

$tg\ \frac{5\pi}{6}$

Вычислите

a)

$-\sqrt{3}$

b)

$\sqrt{3}$

c)

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

d)

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

8.

$Упростите\ выражение\ \sin\left(\pi+\alpha\right)\cos\left(\frac{\pi}{2}-\alpha\right)-\cos^2\left(-\alpha\right)$

a)

$1$

b)

$-1$

c)

$\sin^2\alpha-\cos^2\alpha$

d)

$\cos2\alpha$

10 класс - Формулы приведения

Total questions: 8

Worksheet time: 10mins

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