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How to use the cot function

Hi have a problem, i must work out cot 78 and the answer is 0.213, but i get the wong answer everytime. my calculator is set to degrees but i cant seem to get that answer, can anyone help me please?

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I don't have a Cot button but Cot x = 1/Tan x so enter

1/Tan 78 = 0.212556 etc if you have a fraction button you can write it that way too:

1 frac button Tan 78 = 0.212556 etc

Posted on Jun 17, 2008

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