Q. 24.5( 2 Votes )
In a ∆ABC, if AB=
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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