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Sines and Cosines, Part 3 (Addition formulas)

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Visit this site: http://www.projectmathematics.com/sincos3.htm
Author:Project MATHEMATICS!, California Institute of Technology
Description: A videotape-and-workbook module that explores a basic topic in high school mathematics in ways that cannot be done at the chalkboard or in a textbook. Animation relates the sine and cosine of an angle with chord lengths of a circle, as explained in Ptolemy's Almagest. This leads to elegant derivations of addition formulas, with applications to simple harmonic motion.
Levels: High School (9-12)
Languages: English
Resource Types: Multimedia, Video, Lesson Plans and Activities, Textbooks
Math Topics: Conic Sections and Circles, History and Biography, Trigonometry
Math Ed Topics: Audiovisual/Multimedia, Curriculum/Materials Development

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