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# 4.2 Evaluate your point using period as an aide - free math help

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Grade Level Grades 9-12
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http://www.freemathvideos.com In this video series I show you how to use period as an aide to evaluate a trig function. Using the period as an aide is not always necessary but is very helpful when you have to evaluate trig functions when you are given an angle larger than 2pi or 360 degrees. In this video series I show you how to evaluate your trig function given a point on the unit circle. To evaluate we first need to find the point on the unit circle and determine what points are trig functions use to evaluate for. I show how to solve math problems online during live instruction in class. This is my way of providing free tutoring for the students in my class and for students anywhere in the world. Every video is a short clip that shows exaclty how to solve math problems step by step. The problems are done in real time and in front of a regular classroom. These videos are intended to help you learn how to solve math problems, review how to solve a math problems, study for a test, or finish your homework.I post all of my videos on youtube but if you are looking for other ways to interact with me and my videos you can follow me on the following pages: Blogger: www.mrbrianmclogan.blogspot.comTwitter: @mrbrianmcloganFacebook: mrbrianmclogan

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