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1

Set 3: Trigonometry (Intermediate)

Explanation

Answer: A

PROBLEM

Evidence indicates that what is the reference angle for 330 degrees?

What is the reference angle for 330 degrees?

A.

30 degrees

✓ Correct
B.

60 degrees

C.

150 degrees

D.

330 degrees

Detailed Explanation

[Variation 4] Choice A is the best answer. Reference angle for 330 degrees is 30 degrees

Why others are wrong:
B: 60 degrees is incorrect because it does not satisfy the equation.
C: 150 degrees is incorrect because it does not satisfy the equation.
D: 330 degrees is incorrect because it does not satisfy the equation.
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