SOLUTION: Prove tan squared theta times cos squared theta minus 1 divided by tan squared = 1

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Question 291497: Prove tan squared theta times cos squared theta minus 1 divided by tan squared = 1
Answer by Edwin McCravy(20056) About Me  (Show Source):
You can put this solution on YOUR website!
Prove tan squared theta times cos squared theta minus 1 divided by tan squared = 1

%28Tan%5E2theta%2ACos%5E2theta-1%29%2F%28Tan%5E2theta%29=1
That can't be prove for it isn't true. For if theta=%2245%B0%22, then
Tan%28theta%29=1 and Cos%28theta%29=sqrt%282%29%2F2
%28%281%29%5E2%2A%28sqrt%282%29%2F2%29%5E2-1%29%2F%281%29%5E2=1
%28%281%29%2A%282%2F4%29-1%29%2F1=1
1%2F2-1=1
-1%2F2=1
And that just isn't true, so it isn't true for all theta.
Edwin