यदि triangleABC में AD bot BC और AD^(2...

यदि `triangleABC` में AD `bot` BC और `AD^(2) = BD.DC` है, तो `angleBAC` का माप है:

A

`60^(@)`

B

`75^(@)`

C

`90^(@)`

D

`45^(@)`

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The correct Answer is:

3

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