Question

The measurement of one angle of a right triangle is 42°. What is the measurement of the missing angle?

Answer 1

48°

Explanation:

42 + 90 = 132

because all triangle angles add up to 180°, then:

180 - 132 = 48°

Answer 2

All triangles have 3 angles that add up to 180 degrees.
All right angle triangles have a 90 degree angle.
You have two angles, 90 and 42.
To find the last one, add 90 and 42. Then subtract that from 180 degrees.

90+42=132
180-132=48

Therefore, the missing angle is 48 degrees.