User contributions for Alex ferguson

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25 May 2008

7 May 2008

4 May 2008

3 May 2008

  • 14:5414:54, 3 May 2008 diff hist +772 N Trigonometric IdentitiesNew page: '''Theorem:''' <math>\sin^2 x + \cos^2 x \equiv 1\!</math> '''Proof:''' * Starting with <math>sin x</math> and <math>cos x</math>, <math>\sin x = \frac{\mathrm{opposite}}{\mathrm{hypote...