Let PQR be a triangle of area △ with a=2,b=72 and c=52, where a,b an – InterviewSolution

1.	Let PQR be a triangle of area △ with a=2,b=72 and c=52, 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 2sinP−sin2P2sinP+sin2P equals
Answer» Let $P Q R$ be a triangle of area $△$ with $a = 2, b = \frac{7}{2}$ and $c = \frac{5}{2},$ 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 $\frac{2 sin P - sin 2 P}{2 sin P + sin 2 P}$ equals

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