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

Precalc Problems Explained

Angles and Radians

Using the Binomial Theorem to expand binomials, Pascal's Rule, and an inductive proof of the Binomial Theorem. Video

Binomial Theorem

Video at Archive.orgVideo 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

Exp and Log Functions

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

Matrix Determinants

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!

Fancy Trig Equations

Using the trig identities for substituting a Pythagorean looking expression.

Trig Substitution & Identities

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

Proof of the Trig Sum and Difference Formulas

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.

Arithmetic Sequences

Answers to a Chapter 12 Test on Partial Fraction Decomposition, Non Linear Systems and the Simplex Method

Fraction Decomposition, Non-Linear Systems, Symplex Method

Using the law of sines and cosines, we explor vectors, complex numbers and applications (aka "Word problems").

Trig with Vectors, Complex Numbers, apps (Precalc 6)

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

Using Sum & Difference Formulas

Here we use the trigonometry from our first Trig Chapter (4 in our textbook) to review how sine, cosine and tangent are used to solve word problems

Some more Trig Word Problems (4.8, 4.R)

Use the inverse trig functions to find unknown angles and use everything you know about sine cosine and tangent to solve word problems

Inverse Trig Functions and Trig Word Problems

Some are getting ready for calculus by taking a Honors Algebra 2 with Trigonometry. Here are topics from Chapter 1 of the Sullivan text that are part of any Honors Algebra 2 class.

Hon Algebra 2 Trig Test 1 answers

Here we have basic angles in radians, and graphing the trig functions of these angles. These functions, with their ability to transform waves with different periods and amplitudes, can be used to mathematically express all sorts of waves we find in real life. These ideas are from Sections 4.1 to 4.6 of our Precalculus book by Larsen.

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Precalc Problems Explained

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