Answer :

It is given in the question that,

In triangle ABC, AB = AC


B = 65°


As ABC is an isosceles triangle


C = B


C = 65°


Now, we now that sum of all angles of a triangle is 180o


A + B + C = 180°


A + 65° + 65° = 180°


A + 130° = 180°


A = 180° – 130°


A = 50°


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