Question

What is one fifth of supplementary angle

Answer 1

Let the angle be x

therefore supplementory angle=1/5×x

sum of supplementary angles=180

x+x/5=180

6x=180×5

x=150

Answer 2

heya
here is your answer

sum of supplementary angles = 180°

let the angle = x

then its supplement = 1/5×x = x/5

so,
x + x/5 = 180°
(5x+x)/5 = 180°
6x/5 = 180°
6x = 180°×5 = 900°
x = 900/6 = 150°

hope this will help u
please like it if it is helpful
any further doubt ask me frankly
i m always ready to help

thank you

-sneha