Trigonometric functions I - Normal

Question 1: Convert

25 °

to radians.

A

\frac{2 π}{3}

B

\frac{5 π}{36}

C

\frac{7 π}{36}

D

\frac{π}{2}

Question 2: Convert

\frac{11 π}{6}

to degrees.

A

270 °

B

45 °

C

225 °

D

330 °

Question 3: A radian measure of an

a r c (α)

in a circle equals

\frac{3 π}{4}

while radius

(R)

equals

5 c m

. What is the length

(l)

of this arc?

A

\frac{4 π}{15}

B

\frac{20 π}{3}

C

\frac{3 π}{20}

D

\frac{15 π}{4}

Question 4: Solve the expression

3 t g 180 ° - 4 c t g 90 °

.

A

0

B

- 7

C

- 1

D

3

Question 5: Solve the expression

\cos (- 60 °) + c t g (- 45 °)

.

A

1

B

0

C

- 1

D

- \frac{1}{2}

Test: Trigonometric functions I - Normal