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#1

$Old$ January 4th, 2009, 12:26 PM

mikeomatic $mikeomatic is offline$

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If sinΘ + cosΘ=1 and sinΘ - cosΘ=1, find the number of degrees in Θ in the interval 0°≤ Θ< 180°.

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#2

$Old$ January 4th, 2009, 12:44 PM

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$\sin{\theta} + \cos{\theta} = 1$
$\sin{\theta} - \cos{\theta} = 1$
------------------------------- add 'em up
$2\sin{\theta} = 2$

$\sin{\theta} = 1$

$\theta = ?$

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#3

$Old$ January 4th, 2009, 12:58 PM

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Ok. I think I got it. Thanks skeeter.

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