Question

the difference between two supplementary angles is is 20°. find the angles

Answer 1

Answer:

If one angle is X then other will be 20+X

Now the sum of the angles is 180° (as they are supplementary)

= x + (20+X) = 180

(After solving the equation)

x = 80°

Hence, the angles are 80° and 100°

Answer 2

Answer:

let 1st angle = x

2nd angle = 20+x

sum of angle = 180°

x+20+x= 180

2x=160

x=80

therefore , 1st angle = 80°

and 2nd angle = 100°