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Let ABC be an isosceles triangle with BC...

Let ABC be an isosceles triangle with BC as its base. Then, `rr_(1)=`

A

`a^(2)`

B

`(a^(2))/(2)`

C

`R^(2) sin ^(2) A`

D

`R^(2)sin^(2)2B`

Text Solution

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The correct Answer is:
C
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