Question

Observe the figure of ∆ ABC .the ratio of measure of .angles a angle c is 4:5 .find the measure of the angle of the triangle

Answer 1

Step-by-step explanation:

let angle of triangle a,band c be x,4x,5x

sum of angle of triangle=180°

a/q

x+4x+5x=180°

10x=180°

x=180°/10

x=18°

4x=18*4=72°

5x=18*5=90°