Question

two supplementary angles are such that one is three times the other,.the greater of the two angles is 135°.how​

Answer 1

Sum of any two angles equals to 180 degrees is called supplementary angles

let one angle = x
second angle = 180-x

2x = 3(180-x) by the given data

2x= 3×180-3x

2x+3x = 180×3

5x = 180×3

x= 180×3/5

x= 108 this is big angle
another angle is 180-x = 72

.

Answer 2

X+3x=180
4x=180
X=45
3x=135