Precalc Problems Explained

Chris Thiel
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Discuss precalculus problems

  1. 08/18/2013 · VIDEO

    Angles and Radians

    Find out how to convert fractions of a degree with Degrees, minutes and seconds, and enter the wonderful world of the radian. I have a some examples of how to convert from degrees to radians and back again, as well as angular and linear speed using radians: Video Link

  2. 03/21/2013 · VIDEO

    Exp and Log Functions

    Video at Archive.org Video at YouTube Solving for an unknown in the exponent requires logarithms! 19 Problems are explained that involve graphing and the properties of exponents and logarithms, as well using your graphing calculator

  3. 03/07/2013 · VIDEO

    Matrix Determinants

    Matrix Determinant Video Use Cramer's Rule to solve a system of equations with Leinitz and Sarrus' method of finding the determinate of a matrix!

  4. 12/02/2011 · VIDEO

    Fancy Trig Equations

    To solve for an unknown angle we will use all sorts of clever tricks, employing the trig formulas and identities in weird and wonderful ways!

  5. 10/22/2011 · VIDEO

    Proof of the Trig Sum and Difference Formulas

    Proof of the sum and difference formulas for sine, cosine and tangent

  6. 10/22/2011 · VIDEO

    Trig Substitution & Identities

    Using the trig identities for substituting a Pythagorean looking expression.

  7. 03/20/2011 · VIDEO

    Arithmetic Sequences

    An Arithmetic Sequence is a pattern where each element changes by adding a constant. Here are examples, as well as the proof the formula for a partial sum of an arithmetic sequence.

  8. 10/30/2010 · VIDEO

    Using Sum & Difference Formulas

    Here we find the trig functions of other angles based on the sum and difference of two angles, the double or half angle. We will prove these formulas in a different video

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