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OpenStudy (anonymous):
Match the right side; cot x sec4x = cot x + 2 tan x + tan3x
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OpenStudy (anonymous):
Anyone else getting cot x + 2 tan x + tan^4 x...?
OpenStudy (dumbcow):
\[\sec^{4} x = (1+\tan^{2}x)^{2} = 1+2\tan^{2} x + \tan^{4} x\] multiply bt cot to get RHS
OpenStudy (anonymous):
RHS?
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