Set 2: Trigonometry (Advanced)

[Variation 1] **Choice B is the best answer.** Reference angle for 240 degrees is 60 degrees

Explanation

Answer: B

PROBLEM

Recent studies show that what is the reference angle for 240 degrees?

What is the reference angle for 240 degrees?

120 degrees

60 degrees

✓ Correct

240 degrees

90 degrees

Detailed Explanation

[Variation 1] Choice B is the best answer. Reference angle for 240 degrees is 60 degrees

Why others are wrong:

A: 120 degrees is incorrect because it does not satisfy the equation.

C: 240 degrees is incorrect because it does not satisfy the equation.

D: 90 degrees is incorrect because it does not satisfy the equation.