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In this video we go over the Half-Angle formulas. These formulas are helpful when proving
identities and, of course, for problems like "calculate the trigonometric functions of 22.5 degrees.
In this video we do a couple of those examples.
Prof. Serna. Math, Statistics & Physics Tutor. Miami.
10300 SW 72nd Street, Suite 460-5, Miami, FL 33173.