Question

if two supplementary angles are in the ratio 1:2, then the bigger angle is

A. 120° B. 125° C. 110° D. 90°​

Answer 1

LET THE ANGLES BE 1X AND 2X

SUM OF SUPPLEMENTARY ANGLES IS 180

1x + 2x = 180

3x = 180

x= 180/3

x= 60

Smaller angle= 60°

Bigger angle= 180 -60 = 120°