If A+B+C = 180 degree then prove that sin2A + sin2B- sin2C=2sinA sinB sinC .

If A+B+C = 180 degree then prove that $\sin^{2} A + \sin^{2} B - \sin^{2} C = 2 \sin A \sin B \sin C$ .

Matching exercise

Match the items on the right to the items on the left.

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