Question

The difference of two supplementary angles is 40^0, find the angles.

Answer 1

the 2 supplementary angle be x,y

x+y=180⁰ -1

x-y=40⁰ -2

By elimination method of 1 and 2

x+y=180

x-y=40

⁻⁻⁻⁻⁻⁻⁻⁻

2x = 220

x = 220/2 = 110

Substitute x=110 in 1

x+y=180

110+y=180

y=180-110 = 70

the angles are 110⁰ and 70⁰

NOTE : ⁰ HERE IT IS A DEGREE