Question

12.
If in a triangle ABC, AB = AC, ZA = x + 15°, ZB = 2x + 25° then valu
e of ZC
a)
71°
b)
51°
c)
610
c)
41°​

Answer 1

Answer:

I think the answer will be B

Answer 2

Answer:

a)71°

Step-by-step explanation:

given, AB=AC , Then angle B would be equal to angle C ( property of an isosceles triangle)

now, angle A + angle B + angle C =180° ( angle sum property of triangle)

(x+15)+(2x+25)+(2x+25)=180°

5x+65=180°

5x=115°

x=23°

now we know that angle C =2x+25° = 2(23)+25°=71°