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Prove that identity

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sin^2 5x - sin^2 3x= sin8xsin2x?

trigonometric-identities

asked May 10, 2014 in CALCULUS by anonymous

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1 Answer

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Left hand side identity =

---> (1)

Now the value of Sin(5x ) - Sin(3x )

And the value of Sin (5x ) + Sin (3x )

Substitute the values in equation (1).

= Right hand side identity.

answered May 10, 2014 by david Expert

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