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how do you do secant on the calculator?
Guest Feb 28, 2012
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sec=1/cos
cos45(degrees)=1/sqrt of 2
sec45(degrees)=1/cos45(degrees)=1/ 1/sqrt of 2=sqrt of 2
so for calc purposes, find sec72(degrees)
you would enter 1 divided by cos72(degrees) to find your answer
Guest Feb 29, 2012

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