Question

in triangle abc, the measure of angle b is 7 more than three times the measure of A. The measure of angle c is 38 more than the measure of angle a find the measure of each angle. what is the measure of angle A?

Answer 1

a + b + c= 180

b= 3a+7 and c= a+38

put the values of a and b in eqn

a+b+c=180

a+( 3a+7 )+(a+38 )=180
5a+ 45=180
5a= 180-45=135
a=135/5 = 27
a= 27 ans