Answer:
A = 75°
B = 90°
C = 15°
Step-by-step explanation:
The diagram tells us that C = 15°.
The diagram places a square in the angle of B, showing you the angle is a 90° right angle.
You can solve for A because all angles of a triangle must equal 180°. 180° - 90° (B) = 90°. 90° - 15° (C) = 75°, the measure of A.
