Set 1: Trigonometry (Intermediate)

[Variation 3] **Choice A is the best answer.** Reference angle for 240 degrees is 60 degrees

Explanation

Answer: A

PROBLEM

Researchers have observed that what is the reference angle for 240 degrees?

What is the reference angle for 240 degrees?

60 degrees

✓ Correct

120 degrees

90 degrees

240 degrees

Detailed Explanation

[Variation 3] Choice A is the best answer. Reference angle for 240 degrees is 60 degrees

Why others are wrong:

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

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

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