Math, asked by annesha2, 1 year ago

plz solve this question.......

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Answered by kishan2247

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cos3x+2cos5x+cos7x/sin3x+2sin5x+sin7x=cos5x/cos3x

=cos(3x+10x+7x)/sin(3x+10x+7x)

=cos20x/sin20x

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