Question

The angles of a triangle are in the ratio 3 : 5 : 7, find all angles of the triangle.​

Answer 1

Let, 3 be 3x , 5 be 5x and 7 be 7x

Angles Of Triangle Are Supplementary,

$3x + 5x + 7x = 180 \\ 15x = 180 \\ x = 180 \div 15 \\ x = 12$

So, 3x = 3 × 12 = 36

5x = 5 × 12 = 60

7x = 7 × 12 = 84

So, The Angles Of The Triangle Are 36° , 60° and 84° .