Question

For the right triangle below, find the measures of the angle.

Answer 1

Given the right-angled traingle as shown in the question

Let the unknown angle be x

`\cos x=(13)/(16)`
`\begin{gathered} \cos x=0.8125 \\ x=\cos ^(-1)(0.8125) \\ x=35.66^0 \end{gathered}`

Hence, the measured angle is 35.66°