Question

if line l parallel to line m and line n is transversal

Answer 1

a=120
b=120
Hope it's helpful..

Answer 2

♥️HEY MATE ♥️
♥️ HERE IS THE ANSWER TO YOUR QUESTION♥️

if line l is parallel to line m and line n is a transversal....

then the value of a will be 180-60(ANGLES ON A STRAIGHT LINE)which is

$180 - 60 = 120$


then the value of b will also be 120 (LINEAR PAIR)♥️

HOPE IT HELPS ♥️