Thread: trig help
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Old January 15th, 2009, 04:31 PM
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1. If the first identity is really \frac{sin(sin^2(x))}{1-cos(x)} then I think that the statement is false. Take e.g. x=pi/4.
2. tan(x) = -\frac{\sqrt{12}}{2}*use the operator arctan [/math]*tan^{-1} [/math]*
3. This is a quadratic equation. Let *cos(x) = y*then the equation becomes 2y^2+y-1=0.*
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