Question

The angles of a triangle are in the ratio 3:5:7. Find the measures of the three angles.​

Answer 1

Step-by-step explanation:

Let the 1st angle of a triangle be 3x

2nd angle of a triangle be 5x

3rd angle of a triangle be 7x

A/q, 3x+5x+7x =180°

15x= 180°

x= 180/15

x= 12

Therefore, 1st angle of a triangle =3x=3×12=36°

2nd angle of a triangle be 5x=5×12=60°

3rd angle of a triangle be 7x=7×12=84°

Answer 2

Answer:

Let the angles be 3x,5x,7x

3x+5x+7x=180°

15x=180°

x= 12

:: 1st angle = 3x=3*12

=36°(Ans)

2nd angle = 5x=5*12

=60°(Ans)

3rd angle= 7x=7*12

=84°(Ans)