Set 1: Trigonometry (Advanced)

**Choice D is the best answer.** Reference angle for 240 degrees is 60 degrees

Explanation

Answer: D

PROBLEM

What is the reference angle for 240 degrees?

240 degrees

120 degrees

90 degrees

60 degrees

✓ Correct

Detailed Explanation

Choice D is the best answer. Reference angle for 240 degrees is 60 degrees

Why others are wrong:

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

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

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