Answer:
77 degrees
Step-by-step explanation:
Right triangles always add up to 180 degrees. We know that one angle is 23 degrees, angle A is missing, and the last angle is a right angle which is equal to 90 degrees. Knowing what we know, we must subtract the two known angles from 180 to get angle A.
180 - 90 = 90
90 - 23 = 77
Angle A is equal to 77 degrees.
hope this helps!! :]
