Math, asked by DHANUSH525, 1 year ago

The sum of two n terms of the series 1 square - 2 cos squared + 3 cos squared minus 4 cos square + 5 + square - 6 + 4 + 7 + 4 - 8 + square

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Answered by pradumnyahedau

0

it is very complecated .

I have no answer..

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