Question

If the angel of a triangel are in the ratio 1:2:3, then prove it is right triangel

Answer 1

Step-by-step explanation:

Let the angles be x , 2x , 3x

Sum of all angles of a triangle is 180°

Therefore

=> x + 2x + 3x = 180°

=> 6x = 180°

=> x = 180°/6

=> x = 30°

2x = 2×30°

= 60°

3x = 3×30°

= 90°

Therefore one angle of triangle is 90°

Hence the triangle is right triangle

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