Question

21.Find the indicated angle measure to the nearest degree.1613?А.510B. 39С C36549

Answer 1

using trigonometric ratio,

let

the unknown angle = x degrees

$\tan x=\frac{opposite}{\text{adjacent}}$$\begin{gathered} \tan x=\frac{13}{16}^{} \\ x=\tan ^{-1}0.8125 \\ x=39.0938588862 \\ x\approx39^{\circ} \end{gathered}$