Question

use a calculator to find the value of the acute angle θ in radians, rounded to three decimal places. cos θ = 0.3605 θ = radians (round to three decimal places.)

Explanation:

Step1: Recall inverse - cosine function

We know that if $\cos\theta = x$, then $\theta=\cos^{- 1}(x)$. Here $x = 0.3605$.

Step2: Use a calculator

Using a calculator in radian mode, we find $\theta=\cos^{-1}(0.3605)$.

Answer:

$1.199$