Question

determine the measure of angle cab.

Explanation:

Step1: Identify the straight - angle property

A straight - angle measures 180°. Angle ∠DAB is a straight - angle and ∠DAC = 37.5°.

Step2: Calculate ∠CAB

We know that ∠DAB=∠DAC + ∠CAB. So, ∠CAB=180°−∠DAC.
∠CAB = 180° - 37.5°=142.5°

Answer:

142.5°