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cos(A+B)=cosAcosB-sinAsinB geometrical proof (video)

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Tiago
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cos(A+B)=cosAcosB-sinAsinB geometrical proof (video) Oct 1, 2017 21:15:14 GMT

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Post by Tiago on Oct 1, 2017 21:15:14 GMT

See how cos(A+B)=cosAcosB-sinAsinB can be derived geometrically by watching the video below. Enjoy!

Last Edit: Oct 1, 2017 21:32:48 GMT by Tiago

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