Set 5: Trigonometry (Beginner)

[Variation 3] **Choice C is the best answer.** Complement = 90 - 30 = 60 degrees

Explanation

Answer: C

PROBLEM

Researchers have observed that if angle A = 30 degrees, what is its complement?

If angle A = 30 degrees, what is its complement?

30 degrees

150 degrees

60 degrees

✓ Correct

120 degrees

Detailed Explanation

[Variation 3] Choice C is the best answer. Complement = 90 - 30 = 60 degrees

Why others are wrong:

A: 30 degrees is incorrect because it does not satisfy the equation.

B: 150 degrees is incorrect because it does not satisfy the equation.

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