Set 3: Trigonometry (Intermediate)

[Variation 3] **Choice B is the best answer.** Reference angle for 210 degrees is 30 degrees

Explanation

Answer: B

PROBLEM

Researchers have observed that what is the reference angle for 210 degrees?

What is the reference angle for 210 degrees?

150 degrees

30 degrees

✓ Correct

60 degrees

210 degrees

Detailed Explanation

[Variation 3] Choice B 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.

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

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