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I have some questions about pre-calculus.
the last problem uses radian measure.
Please help me verify the identity: cos2x(sec2x-1)=sin2x
Also I am having trouble withdetermining whether f(x) is odd, even, or neither f(x)=x3-x
Solve the equation for theta (0 <= theta < 2pi).
tan2(theta) = 3 I know sec2(theta) -1 = tan2(theta) ...