can you prove that:

1/(cos^2 x-sin^2 x)^2 - 4tan^2 x/ (1-tan^2 x)^2 =1

im kinda stuck right now. :(

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- April 20th 2010, 09:37 PMlezahproving
can you prove that:

1/(cos^2 x-sin^2 x)^2 - 4tan^2 x/ (1-tan^2 x)^2 =1

im kinda stuck right now. :( - April 20th 2010, 10:14 PMharish21
- April 21st 2010, 12:13 AMsa-ri-ga-ma