Free Printable Trigonometria

1.

$\sin\left(\frac{3\pi}{2}-x\right)=?$

a)

-sinx

b)

-cosx

c)

cosx

d)

sinx

2.

$\cos\left(\pi+x\right)=?$

a)

sinx

b)

cosx

c)

-cosx

d)

-sinx

3.

$\sin x\times\sin y=?$

a)

$\frac{1}{2}\cdot\left[\cos\left(x-y\right)-\cos\left(x+y\right)\right]$

b)

$\frac{1}{2}\cdot\left[\cos\left(x-y\right)+\cos\left(x+y\right)\right]$

4.

$\cos x\cdot\cos y=?$

a)

$\frac{1}{2}\cdot\left[\cos\left(x-y\right)-\cos\left(x+y\right)\right]$

b)

$\frac{1}{2}\cdot\left[\cos\left(x-y\right)+\cos\left(x+y\right)\right]$

5.

Дәрежесін төмендетіңіз: $\sin^2x=?$

a)

$1-\cos2x$

b)

$1+\cos2x$

c)

$\frac{1-\cos2x}{2}$

d)

$\frac{1+\cos2x}{2}$

6.

$2\cos^2x=?$ Дәрежесін төмендетіңіз:

a)

$\frac{1-\cos2x}{2}$

b)

$\frac{1+\cos2x}{2}$

c)

$1+\cos2x$

d)

$1-\cos2x$

7.

$\sin x+\sin y=?$

a)

$2\cdot\sin\ \frac{x+y}{2}\cdot\cos\ \frac{x-y}{2}$

b)

$2\cdot\sin\ \frac{x-y}{2}\cdot\cos\ \frac{x+y}{2}$

8.

$\cos x-\cos y=?$

a)

$-2\cdot\sin\ \frac{x+y}{2}\cdot\sin\ \frac{x-y}{2}$

b)

$2\cdot\cos\ \frac{x+y}{2}\cdot\cos\ \frac{x-y}{2}$

9.

$tgx+tgy=?$

a)

$\frac{\sin\left(x+y\right)}{\cos x\cdot\cos y}$

b)

$\frac{\sin\left(x-y\right)}{\cos x\cdot\cos y}$

10.

$\frac{\sin\left(\pi-\alpha\right)\cdot tg\left(\alpha-\frac{\pi}{2}\right)}{\cos\left(\frac{3\pi}{2}+\alpha\right)\cdot\operatorname{ctg}\left(\pi-\alpha\right)}=?$

a)

$1$

b)

$-tg\alpha$

c)

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

d)

$-1$

11.

$\sin\left(90^0+\alpha\right)-\frac{\cos^2\left(\alpha-90^0\right)}{\sin\left(\alpha+270^0\right)}=?$

a)

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

b)

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

c)

$1$

d)

$\cos\alpha$

12.

$\frac{\sin\left(\frac{3\pi}{2}-\alpha\right)\cdot\cos\left(\pi+\alpha\right)\cdot\operatorname{ctg}\left(\frac{3\pi}{2}+\alpha\right)}{tg\left(2\pi-\alpha\right)}=?$

a)

$\cos\alpha$

b)

$\cos^2\alpha$

c)

$\frac{1}{tg\alpha}$

d)

1

Trigonometria

Total questions: 12

Worksheet time: 9mins

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