Question

Question was provided via image upload.

Explanation:

Step1: Sumar los ángulos dados

$$45^{\circ}+27^{\circ}+33^{\circ}=105^{\circ}$$

Step2: Restar la suma de los ángulos dados de $180^{\circ}$

$$180^{\circ}-105^{\circ}=75^{\circ}$$

Answer:

$75^{\circ}$