In `DeltaABC`,prove that: `sin2A + sin2B-sin2C=4cosA cosB sinC`

In DeltaABC , prove that: sin2A+sin2B+sin2C=4sinAsinBsinC

If A+B+C=pi/2 , prove that: sin2A + sin2B+sin2C = 4cosA cosB cosC

If A+B+C=180^(@), prove that sin2A+sin2B-sin2C=4cos A cos B sin C

If A+B+C=pi , prove that sin 2A+sin 2B-sin 2C=4 cos A cos B sin C

If A+B+C= pi/2 ,prove that: sin2A-sin2B+sin2C=4sinAcosBsinC

In DeltaABC , prove that: a) (sin2A + sin2B + sin2C)/(sinA+sinB+sinC) = 8sinA/2 sinB/2sinC/2

If A+B+C=pi, prove that sin2A-sin2B+sin2C=4cosA sin B cosC .

If A+B+C=pi , prove that : sin2A+sin2B+sin2C=4sinA sinB sinC

If A+B+C=180^0 , prove that : sin^2 A + sin^2 B + sin^2 C =2 (1+cosA cosB cosC)

If A+B+C=pi, prove that sin^(2)A-sin^(2)B+sin^(2)C=2sinA cos B sinC