Let `PQR` be a triangle of area `Delta` 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 at `P, Q and R` respectively. Then `(2sinP-sin2P)/(2sinP+sin2P)` equals

Let PQR be a triangle of area Delta 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 at P, Q and R, respectively. Then (2 sin P - sin 2P)/(2 sin P + sin 2P) equals

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

Let PQR be a triangle of area Delta 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 at P,Q and R respectively.Then (2sin P-sin2P)/(2sin P+sin2P) equals

Let P Q R be a triangle of area with a=2,b=7/2,a n dc=5/2, w h e r ea , b ,a n dc are the lengths of the sides of the triangle opposite to the angles at P ,Q ,a n dR respectively. Then (2sinP-sin2P)/(2sinP+sin2P)e q u a l s

In a triangle ABC with fixed base BC, the vertex A moves such that cos B + cos C = 4 sin^(2) A//2 If a, b and c denote the lengths of the sides of the triangle opposite to the angles A,B and C respectively, then

In a triangle ABC with fixed base BC, the vertex A moves such that cos B+cosC=4sin^(2)A/2 . If a,b,c denote the lengths of the triangle opposite to the angles A,B and C respectively, then

Consider a triangle ABC and let a,b and c denote the lengths of the sides opposite to vertices A,B and C respectively.If a=1,b=3 and C=60^(@), the sin^(2)B is equal to