Set 4: Trigonometry (Intermediate)

[Variation 4] **Choice D is the best answer.** Reference angle for 210 degrees is 30 degrees

Explanation

Answer: D

PROBLEM

Evidence indicates that what is the reference angle for 210 degrees?

What is the reference angle for 210 degrees?

150 degrees

60 degrees

210 degrees

30 degrees

✓ Correct

Detailed Explanation

[Variation 4] Choice D is the best answer. Reference angle for 210 degrees is 30 degrees

Why others are wrong:

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

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

C: 210 degrees is incorrect because it does not satisfy the equation.

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