Question

please answer the question​

Answer 1

Step-by-step explanation:

In triangle ABC...

AB=AC...(given)

so,angle B=angleC..........angles opp.to congruent sides...

angle B=angle C=60

hence..angle A=60......measure of all angles of tri.

Now in,tri.BDC....

BD=DC

so..angle C=angle B.....

C=B=75

angle D=180-C-B

D=180-75-75

D=30