Question

If 3 angles of a triangle are in the ratio 1:4:7 . Find the angles​

Answer 1

$\huge\fbox\red{Answer}$

Let take three angles as 1x , 4x , 7x

Sum of three angles is 180°

x + 4x + 7x = 180°

12x = 180°

x = 180°/12

x = 15°

So the three angles are x = 15°

4x = 4(15) = 60°

7x = 7(15) = 105°

Answer 2

Let consider the no.x,4x,7x

A/C:-

x+4x+7x=180°

=>12x=180°

=>x=180°/12

=>x=15

Now, x=15°

4x=4×15=60°

7x=7×15=105°