shelbylou shelbylou
  • 06-02-2017
  • Mathematics
contestada

1-2sinxcosx = (sinx-cosx) ^2

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Аноним Аноним
  • 12-02-2017
(Sin x - cos x)^2
= sin^2 + cos x^2 - 2 sin x cos x
= 1 - 2 sin x cos x
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