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OpenStudy (castiel):
Trig question...
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OpenStudy (castiel):
\[ \frac{ \cos ^{2}x }{ \cot \frac{ x }{ 2 } -\tan \frac{ x }{2 }}\] x!=kpi, keZ
OpenStudy (castiel):
Simplify
myininaya (myininaya):
maybe you can use the half-angle identities
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