Question

solve for c.
156.5°
117.5°
c = ?°

Explanation:

Step1: Sum of angles in triangle

The sum of angles in a triangle is $180^\circ$.

Step2: Calculate angle c

$c = 180^\circ - 117.5^\circ - (180^\circ - 156.5^\circ)$
$= 180 - 117.5 - 23.5$
$= 86$

Answer:

86