Question

One of the exterior angle of a triangle is 120 and its interior

opposite angles are in the ratio 5 : 3. Find all the angles of the

triangle.​

Answer 1

In a triangle

The exterior angle = Sum of opposite interior angles

Let the interior angles be = 5x and 3x

Now according to the formula

5x + 3x = 120
8x = 120
x = 120/8
x = 15

Now
1st angle = 5x = 5*15 = 75
2nd angle = 3x = 3*15 = 45

Answer 2

Hope this would be helpfullll