Answer
$1.3265$
Work Step by Step
Step 1: We ensure that the calculator is in radian mode.
Step 2: $\tan s=4.0112$ can be written as $s=\tan^{-1} 4.0112$
Step 3: Using the inverse cosine function in the calculator, we type $\tan^{-1} 4.0112$ into the calculator and solve.
Step 4: $s=\tan^{-1} 4.0112\approx1.3265$
