Trigonometric Functions I - Ambitious

Question 1: Compare these two angles expressed in radians:

\frac{π}{4}

and

1

.

A

\frac{π}{4} = 1

B

\frac{π}{4} \geq 1

C

\frac{π}{4} > 1

D

\frac{π}{4} < 1

Question 2: Solve the expression

s i n 0 + t g π - c o s 2 π

.

A

1

B

- \frac{1}{2}

C

- 1

D

0

Question 3: Which of these functions can be equal to

\frac{\sqrt{6}}{2}

:

\begin{array}{l} 1) s i n α \\ 2) c o s α \\ 3) t g α \end{array}

A

1) and 3)

B

2)

C

3)

D

1) and 2)

Question 4: Solve the expression

\sin^{2} (- 30 °) + \cos^{2} (- 60 °)

.

A

\frac{1 + \sqrt{3}}{2}

B

\frac{1}{2}

C

- \frac{1}{2}

D

\frac{\sqrt{3} - 1}{2}

Question 5: Compare two expressions:

s i n 20 °

and

s i n 21 °

.

A

s i n 20 ° = s i n 21 °

B

s i n 20 ° < s i n 21 °

C

s i n 20 ° \leq s i n 21 °

D

s i n 20 ° > s i n 21 °

Test: Trigonometric Functions I - Ambitious