How to derive two more cosine double-angle formulas.
How to use DeMoivre's Theorem to compute the cube roots of a complex number.
How to find the roots of a complex number quickly using four simple guidelines.
How to graph y = tan(q) for one or more periods.
How to derive the sine of a sum formula.
How to determine whether two matrices are inverses.
How to evaluate logarithms when the argument is a recognizable power of the base.
How to use the Euler Formula to convert a complex number from the exponential form to rectangular form.
How graph the cotangent function using five key points.
How graph the secant function using five key points.
How to convert a system of linear equations into a matrix equation and solve it.