Question

use a calculator to find the value of the following expression rounded to two decimal places.
\\( \cos ^ { - 1 } \frac { 10 } { 11 } \\)
\\( \cos ^ { - 1 } \frac { 10 } { 11 } = \square \\) radian(s)
(type your answer in radians. round to the nearest hundredth as needed.)

Explanation:

Step1: Input the expression into the calculator

On a calculator, enter cos⁻¹(10/11).

Step2: Round the result

The calculator gives a value. Round it to two decimal places.

Using a calculator, $\cos^{-1}\frac{10}{11}\approx 0.43$ radians.

Answer:

$0.43$