SOLUTION: (sec90 - tan90)

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Question 1010805: (sec90 - tan90)
Answer by ikleyn(52915) About Me  (Show Source):
You can put this solution on YOUR website!
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It is very easy to answer this question.

sec(90°) = 1%2Fcos%2890%5Eo%29  is not defined,  because cos(90°) = 0.

tan(90°) = sin%2890%5Eo%29%2Fcos%2890%5Eo%29  is not defined,  because  cos(90°) = 0.

Therefore,  the expression  sec(90°) - tan(90°)  is not defined.

Answer.  The expression  sec(90°) - tan(90°)  is not defined.