Question

Mñ%3A%20%20%5C%3A%20m%20%3C%20cad" id="TexFormula1" title="m < c = 36 \\ m < b = 123 \\ find \: \: \: m < cad" alt="m < c = 36 \\ m < b = 123 \\ find \: \: \: m < cad" align="absmiddle" class="latex-formula">

Answer 1

Using exterior angle formula, you get that ∠CAD=36+123=159°

Exterior angle formula says that the angles facing CAB (ACB and ABC) sum to CAD.