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In triangle ABC, AB = AC. If angle A is ...

In `triangle ABC`, AB = AC. If `angle A` is twice the sum of other two angles of the triangle, then the measure of `1/2 angle A` is:
`triangle ABC` में, AB = AC | यदि त्रिभुज के अन्य दो कोणों का दोगुना है, तो `1/2 angle A` का माप है:

A

`70^@`

B

`60^@`

C

`30^@`

D

`80^@`

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