Question

prove that sin² 5 x- sin² 3 x is = sin 8X sin 2x​

Answer 1

Step-by-step explanation:

L. H. S = sin²5x - sin²3x

= (sin5x + sin 3x)(sin5x - sin 3x)

= sin8x sin 2x

= R. H. S

Hence it is proved that, sin² 5 x- sin² 3 x is = sin 8X sin 2x.

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