Question

an angle is one fifth of its supplement the measure of the angle is

Answer 1

Answer:

30 deg

Step-by-step explanation:

let the angle be x

so it's supplement is y

a.t.q

$x=\frac{1}{5}y$  - (i)

x+y=180 deg                    -(ii)

substituting (i) in (ii)

$y+\frac{1}{5} y$=180 deg

$\frac{6}{5} y$=180deg

so

y=150 deg

x+y=180 deg

x=180 deg - 150 deg

x=30 deg