Respuesta :

Given the right-angled traingle as shown in the question

Let the unknown angle be x

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

Hence, the measured angle is 35.66°

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