# Maths to prove that tanA + cotA = 1

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### Anonymous

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I am having problems with this one. Is this tan(a) + cotan(a)=1? The only solution I get is sec*csc. Tan is sin/cos and cotan is cos/sin which yields sec*csc. Is it supposed to be adding these two or multiplying these two? cuz if it is tan(a) * cotan(a) then the answer is one.

Posted on Jun 26, 2009

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