Question

If x=1/3 y, show y=135°. Supplementary angle

Answer 1

see explanation

Explanation:

Supplementary angles sum to 180° , then

x + y = 180 , that is

`(1)/(3)` y + y = 180 ( multiply through by 3 to clear the fraction )

y + 3y = 540

4y = 540 ( divide both sides by 4 )

y = 135°