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2

Set 5: Trigonometry (Intermediate)

Explanation

Answer: D

PROBLEM

Evidence indicates that what is the reference angle for 150 degrees?

What is the reference angle for 150 degrees?

A.

150 degrees

B.

150 degrees

C.

60 degrees

D.

30 degrees

✓ Correct

Detailed Explanation

[Variation 4] Choice D is the best answer. Reference angle for 150 degrees is 30 degrees

Why others are wrong:
A: 150 degrees is incorrect because it does not satisfy the equation.
B: 150 degrees is incorrect because it does not satisfy the equation.
C: 60 degrees is incorrect because it does not satisfy the equation.
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