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In Delta ABC, r1^2+r2^2+r3^2+r^2=...

In `Delta ABC, r_1^2+r_2^2+r_3^2+r^2=`

A

`16R^2-(a^2+b^2+c^2)`

B

`16R^2-(a^2+b^2-c^2)`

C

`16R^2-(a^2-b^2+c^2)`

D

`16R^2-(a^2-b^2-c^2)`

Text Solution

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The correct Answer is:
A
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