Question

use a calculator to find the approximate value of the expression. round the answer to two decimal places. the cosine of the complimentary angle to 38°. a. 0.68 b. -0.16 c. -0.22 d. 0.62 please select the best answer from the choices provided

Explanation:

Step1: Find complementary angle

The complementary angle to $38^{\circ}$ is $90^{\circ}- 38^{\circ}=52^{\circ}$.

Step2: Calculate cosine value

Using a calculator, $\cos(52^{\circ})\approx0.62$.

Answer:

D. 0.62