SOLUTION: Show that each of the following is an identity 1+tan^2x / csc^2x = tan^2x Cos^4x - 2cos^2x + 1 + sin^4x 1+cosx/sinx + sinx/cosx = 1+cosx/sinxcosx

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Question 297320: Show that each of the following is an identity
1+tan^2x / csc^2x = tan^2x


Cos^4x - 2cos^2x + 1 + sin^4x

1+cosx/sinx + sinx/cosx = 1+cosx/sinxcosx
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Show that each of the following is an identity
1+tan^2x / csc^2x = tan^2x
Change all terms to sine and cosines.
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Cos^4x - 2cos^2x + 1 + sin^4x
No equal sign.
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1+cosx/sinx + sinx/cosx = 1+cosx/sinxcosx
Multiply thru by sin*cos