From YouTube, produced by Westerville South High School

This is a parody of "Gettin' Jiggy Wit It" by Will Smith. The video and song teaches the basics of trigonometry. This is a great resource and a fun way to help teach mastery of these important skills. (03:48)

Definition of trigonometric ratios, degrees, radians, sin, cos, tan. Finding sign of ratios. White board in a class setting, some interaction, engaging, several examples of increasing complexity. The discussion is clear and understandable.(05:51)

This 9:36 long video introduces the center of mass, the point of location
in which the total mass of the object exists. For example, when forces are applied on the center of mass, the object accelerates with the exact same force applied.

This video uses the X, Y axis to describe some essentials of trigonometric angles. Discusses: positive angles; negative angles; 90 degree angles etc. Instructor working on a white board. (3:45)

This two-minute video is about using tangent ratios, which is opposite over adjacent. You use this equation to find side lengths. Right triangles have ratios that are used to represent their base angles. Tangent ratios, along with cosine and sine rat...ios, are ratios of two different sides of a right triangle. Tangent ratios are the ratio of the side opposite to the side adjacent the angle they represent. In order to find the measure of the angle itself, one must understand inverse trigonometric functions. This shows how this works. It moves rapidly so it is recommended that you stop the video often tor review.[more]

A whiteboard-and-narration review of sine and cosine. The sound quality is a little rough because the instructor has the microphone too close to him. Show the video full screen to avoid horizontal stretching. (4:52)

In this video, the instructor talks about trigonometric functions as they relate to right triangles. He defines each function and how to find it using the different sides of right triangles. Then, he does example problems using the definitions of t...he trigonometric functions defined at the beginning. There is a buzzing sound in the background of this video, but the instructor is still able to be heard well.[more]

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