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In DeltaABC right angled at A cos^(-1)((...

In `DeltaABC` right angled at `A cos^(-1)((R)/(r_(1)+r_(3)))` is

A

`30^(@)`

B

`60^(@)`

C

`90^(@)`

D

`45^(@)`

Text Solution

Verified by Experts

The correct Answer is:
B
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