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12 March, 09:06

How do you solve

sin9x/1-cos^2 (9x)

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Answers (1)
  1. 12 March, 09:19
    0
    Using formula sin^2 x + cos^2 x = 1 you get 1 - cos^2 (9x) = sin^2 (9x)

    so in this way this fraction will be rewrited

    sin9x / (1-cos^2 (9x) = sin9x / sin^2 (9x) = 1/sin9x
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