What is the value of sin 30° + cos 60°?

Q: What is the value of sin 30° + cos 60°?

The correct answer is B. sin 30° = 1/2 and cos 60° = 1/2, so sin 30° + cos 60° = 1/2 + 1/2 = 1. Remember that sin 30° = cos 60° because they are complementary angles (30° + 60° = 90°). Trick: For complementary angles, sin θ = cos(90° - θ).

Question

Accepted Answer

sin 30° = 1/2 and cos 60° = 1/2, so sin 30° + cos 60° = 1/2 + 1/2 = 1. Remember that sin 30° = cos 60° because they are complementary angles (30° + 60° = 90°). Trick: For complementary angles, sin θ = cos(90° - θ).