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Properties of Triangle question

2012 · Shift 2 · Q31

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PYQ Library
JEE Advanced
Mathematics
Properties of Triangle
2012 · Shift 2 · Q31

Properties of Triangle question

2012 · Shift 2 · Q31

JEE AdvancedMathematicsProperties of TriangleMCQ+4 / −1

Let

PQR

be a triangle of area

\Delta

with

a=2

,

b = {7 \over 2}

and

c = {5 \over 2}

; where

a, b,

and

c

are the lengths of the sides of the triangle opposite to the angles at

P.Q

and

R

respectively. Then

{{2\sin P - \sin 2P} \over {2\sin P + \sin 2P}}

equals.

A
${3 \over {4\Delta }}$
B
${45 \over {4\Delta }}$
C
${\left( {{3 \over {4\Delta }}} \right)^2}$
D
${\left( {{45 \over {4\Delta }}} \right)^2}$

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