Free Printable Unghiuri si arce de cerc

1.

Cate grade sexagesimale are $\frac{\pi}{3}$ radiani ?

a)

$45^0$

b)

$30^0$

c)

$90^0$

d)

$60^0$

2.

Unghiul de $90^0$ are

a)

$\frac{\pi}{4}$ radiani

b)

$\pi$ radiani

c)

$\frac{\pi}{2}$ radiani

d)

$2\pi$ radiani

3.

Arcul de cerc de $\frac{2\pi}{3}$ radiani subîntinde un unghi de:

a)

$120^0$

b)

$225^0$

c)

$150^0$

d)

$330^0$

4.

Unghiul de $45^0$ are:

a)

$\frac{\pi}{6}$ radiani

b)

$\frac{\pi}{4}$ radiani

c)

$\pi$ radiani

d)

$\frac{\pi}{3}$ radiani

5.

Arcul de cerc de 2π radiani subîntinde un unghi de:

a)

$360^0$

b)

$120^0$

c)

$240^0$

d)

$180^0$

6.

Unghiul de $150^0$ are:

a)

$\frac{\pi}{2}$ radiani

b)

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

c)

$\frac{3\pi}{2}$ radiani

d)

$\frac{4\pi}{3}$ radiani

7.

Arcul de cerc de $\frac{5\pi}{4}$ radiani subîntinde un unghi de:

a)

$225^0$

b)

$120^0$

c)

$315^0$

d)

$135^0$

8.

Unghiul de $270^0$ are:

a)

$2\pi$ radiani

b)

$\frac{7\pi}{3}$ radiani

c)

$\frac{3\pi}{2}$ radiani

d)

$\frac{5\pi}{4}$ radiani

9.

Arcul de cerc de $\frac{\pi}{6}$ radiani subîntinde un unghi de:

a)

$60^0$

b)

$120^0$

c)

$90^0$

d)

$30^0$

10.

Unghiul de $120^0$ are:

a)

$\frac{3\pi}{4}$ radiani

b)

$\frac{\pi}{2}$ radiani

c)

$\frac{2\pi}{3}$ radiani

d)

$\frac{\pi}{12}$ radiani

11.

sin( $45^0$ ) este:

a)

$\frac{1}{2}$

b)

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

c)

0

d)

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

12.

cos $90^0$ este :

a)

1

b)

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

c)

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

d)

0

13.

sin $30^0$ este:

a)

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

b)

1

c)

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

d)

$\frac{1}{2}$

14.

$\ tg\ 60^0\ este:$

a)

$\sqrt{3}$

b)

1

c)

0

d)

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

15.

$\cos\ 45^{0^{ }}$ este:

a)

0

b)

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

c)

$\frac{1}{2}$

d)

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

16.

$\sin\ 60^0\ este:$

a)

$\frac{1}{2}$

b)

0

c)

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

d)

1

17.

$tg\ 45^0\ este\ :$

a)

1

b)

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

c)

$\frac{1}{2}$

d)

$\sqrt{3}$

18.

$\sin\ 90^0\ este\ :$

a)

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

b)

$\sqrt{3}$

c)

1

d)

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

19.

$\operatorname{ctg}\ 30^0\ este:$

a)

$\sqrt{3}$

b)

$\frac{1}{2}$

c)

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

d)

0

20.

$\cos\ 60^0\ este:$

a)

1

b)

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

c)

0

d)

$\frac{1}{2}$

Unghiuri si arce de cerc

Total questions: 20

Worksheet time: 10mins

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