Q 1619178010.     A `Delta ABC` is inscribed in a circle. If sum of the
squares of sides of the triangle is equal to twice the
square of the diameter, then sitl `A + sin^2 B + sin^2 C` is equal to

CDS 2015 Paper-1
A

`2`

B

`3`

C

`4`

D

None of these

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