Set 1: Trigonometry (Intermediate)

[Variation 1] **Choice B is the best answer.** Reference angle for 150 degrees is 30 degrees

Explanation

Answer: B

PROBLEM

Recent studies show that what is the reference angle for 150 degrees?

What is the reference angle for 150 degrees?

60 degrees

30 degrees

✓ Correct

150 degrees

Detailed Explanation

[Variation 1] Choice B is the best answer. Reference angle for 150 degrees is 30 degrees

Why others are wrong:

A: 60 degrees is incorrect because it does not satisfy the equation.

C: 150 degrees is incorrect because it does not satisfy the equation.

D: 150 degrees is incorrect because it does not satisfy the equation.

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