Angles and RadiansAug 18, 2013Find out how to convert fractions of a degree with Degrees, minutes and seconds, and enter the wonderful...View more
Exp and Log FunctionsMar 21, 2013Video at Archive.org Video at YouTube Solving for an unknown in the exponent requires logarithms! 19 Prob...View more
Fancy Trig EquationsDec 2, 2011To solve for an unknown angle we will use all sorts of clever tricks, employing the trig formulas and ide...View more
Proof of the Trig Sum and Difference FormulasOct 22, 2011Proof of the sum and difference formulas for sine, cosine and tangent
Trig Substitution & IdentitiesOct 22, 2011Using the trig identities for substituting a Pythagorean looking expression.
Arithmetic SequencesMar 20, 2011An Arithmetic Sequence is a pattern where each element changes by adding a constant. Here are examples, a...View more
Trig with Vectors, Complex Numbers, apps (Precalc 6)Dec 4, 2010Using the law of sines and cosines, we explor vectors, complex numbers and applications (aka "Word proble...View more