Question

12) if one angle of a triangle is 80° and the other two angle are in the ratio of 2 :3, find the angles. ​

Answer 1

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Let x be the multiple of ratios.

2x+3x+80°=180°

5x+80°=180°

5x=180°-80°

5x=100°

$x = \frac{100}{5}$

$x = 20$

2x=40°

3x=60°

The angles are 40° and 60°.