Don L. answered 03/08/17
Tutor
5
(18)
Fifteen years teaching and tutoring basic math skills and algebra
Hi Rose, complementary angles are two angles that add up to 90 degrees. Let x represent the second angle. Then the first angle is 4x - 15.
Equation:
x + (4x - 15) = 90
5x - 15 = 90
5x= 105
x = 21
One angle is 21 degrees, and the second angle is 69 degrees.
Questions?