Question

in triangle abc ,ab=ac and angle a:angle b= 8:5 find angle a

Answer 1

Given ,

ab = ac

angle b : angle b = 8:5

let them be 8x , 5x


angle b = angle c

angles opposite to equal sides are equal

now

angle a + angle b + angle c = 180

8x + 5x + 5x = 180

18x = 180

x = 10

now angle a = 8x = 80


thanks !!!!

Answer 2

80 is the answer of this question.