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OpenStudy (anonymous):
need help solving sec(x/2)=cos(x/2) over the interval [0,2pi]. thx.
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OpenStudy (anonymous):
\[\frac{ 1 }{ \cos (x/2) } = \cos (x/2)\] \[\cos ^2 (x/2)=1\]
OpenStudy (anonymous):
Can you solve it further?
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