Question

please help me in solving this question ​

Answer 1

Answer:

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Answer 2

Given

sin²6x - sin²4x = sin2x sin10x

L.H.S.

sin²6x - sin²4x

using

{ sin²A - sin²B = sin(A+B) Sin(A-B) }

here A = 6x and B= 4x

so

=> sin(6x + 4x ) sin(6x - 4x)

=> sin10x sin2x

=> sin2x sin10x = R.H.S.

L.H.S. = R.H.S.

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