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y 'll x
and t is transversal line ..
y stand on t ..
so angle 3 + 4 = 180 ( linear pair)
2x -30 + angle 4 = 180
2x + angle 4 = 180 + 30
2x + angle 4 = 210
2x + x = 210 ( because angle 2 = 4 by
corresponding angle)
3x = 210
x = 210/ 3
x = 70
so angle 4 = 70
and angle 3 = 2x -30
= 2 × 70 -30
= 210-30
= 180 ans
and t is transversal line ..
y stand on t ..
so angle 3 + 4 = 180 ( linear pair)
2x -30 + angle 4 = 180
2x + angle 4 = 180 + 30
2x + angle 4 = 210
2x + x = 210 ( because angle 2 = 4 by
corresponding angle)
3x = 210
x = 210/ 3
x = 70
so angle 4 = 70
and angle 3 = 2x -30
= 2 × 70 -30
= 210-30
= 180 ans
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