Answer:
The answer to your question is B = 67°
Step-by-step explanation:
Data
Complementary angles
A = (x + 10)
B = (3x + 28)
When Complementary angles are sum up the result is 90°.
Process
1.- The sum of A + B equals 90°
A + B = 90°
2.- Substitution
(x + 10) + (3x + 28) = 90°
3.- Simplification
x + 10 + 3x + 28 = 90
4x + 38 = 90
4x = 90 - 38
4x = 52
x = 52/4
x = 13
4.- Find B
B = 3(13) + 28
B = 39 + 28
B = 67°
