BIKRAMlawati
BIKRAMlawati BIKRAMlawati
  • 16-02-2017
  • Mathematics
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Cos^2A+sin^2A.cos2B=cos^2B+sin^2B.cos2A

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Аноним Аноним
  • 17-02-2017
How is this possible for a human being to answer
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