Question

use a calculator to find the value of the acute angle \\( \theta \\) in radians, rounded to three decimal places.\\( \cos \theta = 0.5526 \\)\\( \theta = \square \\) radians (round to three decimal places.)

Explanation:

Step1: Use inverse cosine function

$\theta = \cos^{-1}(0.5526)$

Step2: Calculate and round to 3 decimals

Use calculator in radian mode, compute $\cos^{-1}(0.5526) \approx 0.988$

Answer:

0.988 radians