Question

Tell whether the angles are complementary or supplementary. Then find the value of x

Answer 1

complementary

x = 55

Explanation:

if the sum of two angles is 90 degrees, then they are said to be complementary angles, and they form a right angle together.

• Find x

• knowing that the sum is 90° we solve with a proportion

x - 20 + x = 90

2x = 110

x = 55

-----------------------------

check

55 - 20 + 55 = 90

90 = 90

the answer is good