Question

in a ∆abc if ab=ac and angle a =70° find angle b and angle c

Answer 1

The answer is in the image...Hope it will be helpful.....

Answer 2

since AB=AC therefore angle opp to these sides are equal...
i.e. angles B and C are equal...
now sum of the angles if the triangle is 180
A+B+C=180
70+B+C= 180
B+C=110
from above as B and C are equal
2B=110
B=C=55...

hope this helps u:p