paynea2012
paynea2012
17-04-2014
Mathematics
contestada
Verify the identity
Cos^2x-Sin^2x=1-2sin^2x
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Аноним
Аноним
17-04-2014
[tex]cos^2x-sin^2x=1-2sin^2x\\\\\\R=1-2sin^2x=cos^2x+sin^2x-2sin^2x=cos^2x-sin^2x=L\\\\\\\\\\sin^2x+cos^2x=1[/tex]
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