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Posted by on Friday, December 28, 2012 at 4:09am.

tanx=1/1,tany=1/3 then cos2x=sin2y

  • trignometry - , Friday, December 28, 2012 at 4:54am

    x = pi/4, so cos2x = 0
    since y ≠ pi/2, sin2y ≠ 0

    I suspect a typo somewhere

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