Question

an angle is 20 degree more than thrice its supplement angle . find the angles ​

Answer 1

Step-by-step explanation:

Let the required angle be x, then its supplement =(180−x)

Given that x=(180−x)+20

⇒2x=200

⇒x=100

o

Answer 2

Answer:

40° , 140°

Step-by-step explanation:

let the first angle be x

it's supplementary angle (180-x)

x=3(180-x) +20

x=540-3x+20

x+3x=560

4x=560

x=560/4

x=140

the angle is 140°

it's supplementary=180-x=180-140

=40°