lf `sinA = 5sin(B + C) + 2` and `A + B+ C=pi` then `A`

Prove that sin2A + sin2B + sin2C = 4sinA · sinB · sin C

Prove that sin2A + sin2B + sin2C = 4sinA · sinB · sin C

If A + B + C = pi , show that cot A + sinA/(sin B sin C) = cot B + sin B/(sin C sin A) = cot C + sin C/(sin A sin B)

If A,B,C be the angles ofa triangle then prove that (sin A + sin B)(sin B + sin C)(sinC + sinA) gt sin A sin B sinC .

If A+B+C=pi , prove that : sin (B+C-A) + sin (C+A-B) + sin (A+B-C)=4sinA sinB sinC

lf in DeltaABC,b^(2)sin 2C + c^(2) sin 2B = 2bc,then the triangle is

lf in DeltaABC,b^(2)sin 2C + c^(2) sin 2B = 2bc,then the triangle is