Trigonometry Unit Part 1 test review

Question 1

If sin2θ = 1/2, what is the cos θ?

Accepted Answer

√2/2

Question 2

If cos θ > 0 and sin θ < 0, what quadrant is θ in?

Accepted Answer

IV

Question 3

Which expression is equivalent to tan (90o - θ) ?

Accepted Answer

cot θ

Question 4

What negative angle is coterminal with 5π/4?

Accepted Answer

-3π/4

Question 5

For the following angle θ on the UNIT CIRCLE, what is the sec θ?

Accepted Answer

-5/3

Question 6

Which expression is equivalent to cos(5π/6 + 2πn) ?

Accepted Answer

-cos(π/6), cos(5π/6)

Question 7

In the following diagram, how can you determine the angle θ?

Accepted Answer

tan-1(21/25)

Question 8

In the following right triangle, what is the csc θ?

Accepted Answer

13/5

Question 9

For the following angle θ on the UNIT CIRCLE, what is the sin θ

Accepted Answer

-4/5

Question 10

Convert from degrees to radians

Accepted Answer

5π/3

Question 11

Given that sin θ = 24/25 and that θ is in quadrant II, what is the x-coordinate?

Accepted Answer

-7

Question 12

In the following right triangle, what is the cot θ ?

Accepted Answer

12/5

Questions 12