Posted by **Anonymous** on Thursday, March 8, 2007 at 10:59pm.

sine and cosine have a period 2pi

tangent and cotangent have period pi

Can someone explain why? thanks a lot.

well tangent is sine/cosine and there a place where the tangent function is undefined and that is where the asymptotes occur. the same is true with the cotangent since it is cosine/sine.

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