Question

Find the value of sin θ and cos (90° – θ).​

Answer 1

Answer:

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• Trigonometry is the study of the relationship between the sides and angles of a triangle. Two angles are said to be complementary of their sum is equal to 90° . θ & (90° - θ) are complementary angles. Hence, the value of cos θ cos (90 –θ ) – sin θ sin (90 – θ) is 0 (zero).

Answer 2

Trigonometry is the study of the relationship between the sides and angles of a triangle.

Two angles are said to be complementary of their sum is equal to 90° . θ & (90° - θ) are complementary angles.

Hence, the value of cos θ cos (90 –θ ) – sin θ sin (90 – θ) is 0 (zero).