Question

if one angle of a traingle is 80 degree and the other two angles are in the ratio 3:7.
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Answer 1

Let the ratio be x.

then,

3x + 7x + 80° = 180°( Sum of interior angle of

triangle is 180°)

=> 10x + 80° = 180°

=> 10x = 180° - 80°

=> x = 100/10

:- x = 10

1st angle = 80°

2nd angle = 3x

= 3* 10

= 30°

3rd angle = 7x

= 7* 10

= 70°

I hope you will understand.