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 180^{o}

∴ ∠A + ∠B + ∠C = 180°

∠A + 65° + 65° = 180°

∠A + 130° = 180°

∠A = 180° – 130°

∠A = 50°

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