Answers

2015-10-09T22:44:28+05:30
x=50° because
x is the incident ray
angle between incident ray and reflected ray is 80°
incident ray and reflected ray is equal so x+x=2x
total is 180° so, 2x+80°=180°
                        2x=180-80
                        2x=100 = x=100/2 =50
hence 50°

HOPE IT HELPS.........

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