Question

In ∆ABC, Angle A is 4 times angle B. and angle C is 5 times that of angle B Find the measure of each angle.​

Answer 1

Explanation:

Let angle b be x

Let angle a be 4x

Let angle c be 5x

Then,

4x+x+5x=180(sum of angle of a triangle is 180)

or,10x=180

or,x=180/10

x=18

angle a=4x=4*18=72

angle b=18

angle c=5x=5*18=90