Use the unit circle and the fact that cosine is an even function to find the following. cos(−30°)

Mathematics For Machine Technology
8th Edition
ISBN:9781337798310
Author:Peterson, John.
Publisher:Peterson, John.
Chapter73: Achievement Review—section Seven
Section: Chapter Questions
Problem 13AR: Determine the values A in degrees and minutes that correspond to the following functions. cos...
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Use the unit circle and the fact that cosine is an even function to find the following.

cos(−30°)
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