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OpenStudy (anonymous):
Sq rt 1-cos^2 x/ 1+cos^2 x
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OpenStudy (anonymous):
\[\sqrt{\frac{ 1-\cos ^{2}x }{ 1+\cos ^{2}x }}\]
OpenStudy (perl):
whats the question
OpenStudy (anonymous):
is it not cos2x ? (in that case the answer is tan x)
OpenStudy (anonymous):
how?
OpenStudy (anonymous):
|dw:1400759536752:dw|
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