Trigonometery of Compound Angle#!#Sin(A+B)

Trigonometric ratios OF compound angle Sin(A+B) || Sin(A-B) || Cos(A+B) || Cos(A-B) and problem on these

Standard Compound angle and their Derivation & question based on compound angle

If sin A=(3)/(5) and cos B=(9)/(41) then find values of the following compound angles

If A,B,C are the angles of a triangle then maximum value of C and sin A sin B sin C occurs when A=B=C=60^(@)

If A, B, C, D are four angles then sin (AB) .cos (A + B) + sin (BC) .cos (B + C) + sin (CD) .cos (C + D) + sin ( DA) .cos (D + A) =

If the angles A,B and C of a triangle ABC are in an A.P with a positive common difference such that the smallest angle is one third of the largest angle, and the sides a, b and c are the sides opposite to the angles A ,B and C such that (a)/(sin A)=(b)/(sin B)=(c)/(sin C) then the ratio of the longest side to that of the shortest side will be

If A, B, C are the angles of a triangle then sin^(2)A+sin^(2)B+sin^(2)C-2cosAcosBcosC is equal to

If A, B, C are the angles of a triangle, then sin 2A + sin 2B - sin 2C is equal to