Question

what is the measure of the angle of elevation from point l to point j? 37° 45° 53° 137°

Explanation:

Step1: Recall triangle - angle sum property

The sum of the interior angles of a right - triangle is 180°. One angle is 90° and another is given as 53°. Let the third angle (the angle of elevation from point L to point J) be $\theta$.
So, $90^{\circ}+53^{\circ}+\theta = 180^{\circ}$.

Step2: Solve for $\theta$

$\theta=180^{\circ}-(90^{\circ} + 53^{\circ})$.
$\theta = 180^{\circ}-143^{\circ}=37^{\circ}$.

Answer:

$37^{\circ}$