Question

use a calculator to find the value of the following expression rounded to two decimal places.

\\( \cos ^ { - 1 } \frac { 7 } { 13 } \\)

\\( \cos ^ { - 1 } \frac { 7 } { 13 } = \square \\) radian(s)

(type your answer in radians. round to the nearest hundredth as needed )

Explanation:

Step1: Use calculator to compute

On a calculator, input acos(7/13) (make sure the calculator is in radian mode).
$$\cos^{-1}\frac{7}{13}\approx1.09$$

Answer:

\(1.09\)