Question

Use a calculator to find the approximate value of the expression. round the answer to two decimal places. the sine of the complementary angle to 75°.a. 0.65 b. 0.34 c. 0.57 d. 0.26

Answer 1

Answer: Option d. 0.26

Explanation:

Since the addition of complementary angles = 90°

75° + x = 90°

x = 90° - 75 °

x = 15° ( the complementary angle )

sine 15° = 0.25882

= 0.26 correct to two decimal places