Question

Find mzi. 1 5 H 9 J Write your answer as an integer or as a decimal rounded to the nearest tenth.

Answer 1

Given

$\begin{gathered} IH=5 \\ IJ=9 \end{gathered}$

We can find the measure of I below.

Explanation

$\begin{gathered} CosI=\frac{Adjacent\text{ }side}{Hypotenuse\text{ side}}=\frac{IH}{IJ}=\frac{5}{9} \\ I=Cos^{-1}\frac{5}{9} \\ I=Cos^{-1}0.98176 \\ I=56.3^{\circ\:} \end{gathered}$

Answer:

$I=56.3^0$