Question

The diagram shows a triangle.

19c+16°
13c
17c+17°
What is the value of c?
c =
°

Answer 1

c=3

Explanation:

Angle sum of a triangle is 180°

(19c+16)°+13c°+(17c+17)°=180°

collect the like terms i.e

19c+13c+17c+16+17=180°

49c°+33°=180°

49c°=180°-33°

49c°=147

dividing by 49 both sides

49c/49=147/49

c=3