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Angle Bisector Theorem

In a A B C, i...

Question

In a ΔABC, if AB = AC and ∠B = 70°, find ∠A.

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Solution

In it is given that

, and

We have to find.

Since

Then (isosceles triangles)

Now

(As given)

Thus

(Property of triangle)

Hence .

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Similar questions

Q. In a ∆ABC, if AB = AC and ∠B = 65°, find ∠C and ∠A.

In a $Δ A B C, i f A B = A C a n d ∠ B = 70^{\circ}, f i n d ∠ A .$

Q. In isosceles triangle ABC; AB=AC and

∠ B = 70^{o}

∠ A

Δ

=

∠

= 70^{o}

∠

∠

△ A B C

∠ A = 70^{o}

A B = A C

. Find the other angles of

△ A B C

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