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Let PQR be a triangle of ! area with a =...

Let PQR be a triangle of `!` area with a = 2 , b = `7/2` and c = `5/2`, where a , b and c are the lengths of the sides of the triangle opposite to the angles P , Q and R respectively. Then , `(2sinP-sin2P)/(2sinP+sinP)` equals

A

`3/(4Delta)`

B

`(45)/(4Delta)`

C

`(3/(4Delta))^2`

D

none of these

Text Solution

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The correct Answer is:
C
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