Question

Angle a & b are complementary angles. If angle a = 2x and angle b = 4x, then what is the value of x?

Here's what I drew for a better idea:

Answer 1

x= 15

Explanation:

Complementary angles add up to 90° so

a+b = 90, substitute a= 2x, and b = 4x

2x+4x = 90, add like terms

6x = 90, divide both sides by 6

x = 15