Precalc Problems Explained: sin

Showing posts with label sin. Show all posts

Saturday, October 22, 2011

Proof of the Trig Sum and Difference Formulas

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

Trig Substitution & Identities

Using the trig identities for substituting a Pythagorean looking expression.

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If you are getting ready for calculus, at some point you may need to take a "Math Readiness Test" to qualify to enroll. This blog and video podcast is just for you.

I will post a number of problems that I have been asked to solve that could be on this test. Click on the Title to watch the movie with the explanation of the solution. Subscribe to get the movies delivered automatically.

Exercises include algebra, geometry, trigonometry, mathematical modeling, "word problems", logarithms, discrete mathematics, matrices, sequences and any sort of problem anyone starting Calculus should be familiar.

To see the movies, you may need to install Quicktime 7

Precalc Problems Explained

Saturday, October 22, 2011

Proof of the Trig Sum and Difference Formulas

Trig Substitution & Identities

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