" Q."43quad sin^(2)A+sin^(2)(A-B)+2sin A cos B sin(B-A)=

sin ^ (2) A + sin ^ (2) (AB) -2sin A cos B sin (AB) = sin ^ (2) B

Prove that: sin^2B=sin^2A+sin^2(A-B)-2sin A cos B sin(A-B)

2sin^(2)B+4cos(A+B)sin A sin B+cos2(A+B)=

Prove (i)sin(A+B)+sin(A-B)=2sin A cos B (ii) sin(A+B)-sin(A-B)=2cos A sin B

If A+B+C= 180^(@) , prove that: (i) "sin"^(2)+"sin"^(2)B-"sin"^(2)C=2 "sin"A sin B cos C (ii) "sin"^(2)A-"sin"^(2)B+"sin"^(2) C=2 sin Acos B sin C.

If : A+B+C=pi, "then"" "sin ^(2) A +sin^(2)B - sin ^(2)C= A) 2 cos A * cos B * sin C B) 2 cos B * cos C * sin A C) 2 sin A * sin B * cos C D) 2 sin B * sin C * cos A

(sin ^ (2) A-sin ^ (2) B) / (sin A cos A-sin B cos B) = tan (A + B)

(sin ^(2) A - sin ^(2) B)/( sin A cos A - sin B cos B) is equal to

If A + B + C = 180^(@) , prove that sin^(2)A + sin^(2)B - sin^(2)C = 2 sin A sin B cos C

In any triangle ABC,sin^(2)A-sin^(2)B+sin^(2)C is always equal to (A) 2sin A sin B cos C(B)2sin A cos B sin C(C)2sin A cos B cos C(D)2sin A sin B sin C