Question: In studying the interference of light waves, the identity is used. Prove this identity. sin+x sin+x -sinx = sinx+ sin 2x
In studying the interference of light waves, the identity

is used. Prove this identity.
sin+x sin+x -sinx = sinx+ sin 2x
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We can simplify the lefthand side of the identity using the exponent laws for ... View full answer
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