SOLUTION: How to find: cot 90 Tan 90 is undefined, so I thought cot 90 would be undefined also. However, "undefined" is not the answer given in the back of my textbook.

SOLUTION: How to find: cot 90 Tan 90 is undefined, so I thought cot 90 would be undefined also. However, "undefined" is not the answer given in the back of my textbook.

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Question 735208: How to find: cot 90
Tan 90 is undefined, so I thought cot 90 would be undefined also. However, "undefined" is not the answer given in the back of my textbook.
Answer by MathLover1(20855) (Show Source): You can put this solution on YOUR website!

is undefined, and
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