Question

in triangle ABC the measure of angle B is 21 less than four times the measure of angle A and the measure of angle C is 1 more than five times the measure of angle A find the measure of each angle

Answer 1

Step-by-step explanation:

let the angle A be x

so angle B will be 4x-21

and angle C will be 5x+1

= angleA+ B + C = 180 ( angle sum property of triangle)

= x+ ( 4x-21) + ( 5x+1) = 180

= 10x - 20 = 180

= 10x = 180 + 20= 200

= x = 200/10 = 20

angle A = 20

angle B = 59

angle C = 101