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X and y are angles on a triangle line l forming linear pairs. If twice of X is 30° less than y. Find X and y.

Posted by Tilak Raj 8 years, 6 months ago

CBSE > Class 09 > Mathematics

1 answers

Gauri Gupta 8 years, 6 months ago

2x=y-30°,x=y-30°/2 X+y=180° Y-30°/2+y=180°(putting value of y) Y-30°+2y/2= 180° 3Y-30°=180°×2 3y-30°=360° 3y=360°+30° 3y=390° Y=390°÷3 Y=130° X+y=180°{linear pair} X+130°=180° X=180°-130° X=50° X=50°,y=130°

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CBSE > Class 09 > Mathematics