Pre-Calculus: Trig Equations and Quadratic Formula
http://www.mindbites.com/series/116-pre-cal-solving-trigonometric-equations for a bundle of videos on . For an even broader bundle of videos that cover and , check out http://www.mindbites.com/series/289-trigonometry-trigonometric-identities . To search for topic-specific help in our library of 400+ video products for Trigonometry & Pre-Calculus, please refer to our Trigonometry category at: http://www.mindbites.com/category/31-trigonometry and our Calculus Category at http://www.mindbites.com/category/23-calculus . To check out our full Trig & Pre-Cal video course, with 150 videos included, refer to: http://www.mindbites.com/series/845-trigonometry-full-course . Or, for access to this single video, go to: http://www.mindbites.com/lesson/1233-pre-calculus-trig-equations-and-quadratic-formula Sometimes, trigonometric equations cannot be factored. To solve these equations, Professor Burger shows you how to apply the quadratic formula to find solutions to these equations. This is a multi-step process that starts with simplifying the equation. After the equation is simplified, you will be able to solve the quadratic formula and then enter that answer in to solve for X. In the lesson example, Professor Burger uses both a calculator and graphing to ensure he has the correct points. This lesson explains the covered material by walking through sample equations 3sin^2(2x) + sin (2x)-1 = 0. This equation has 2 solutions over the interval from zero to 2*pi. This lesson is loaded with warnings about easy mistakes to make and pitfalls to be wary of when evaluating problems like this. Taught by Professor Edward Burger, this lesson was selected from a broader, comprehensive course, Precalculus.
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