aznluster
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The two functions cos(pi +x) and -cos(x) are the same yet their graphs are different. Why is that?
Understanding the Difference Between cos(pi +x) and -cos(x)
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How are their graphs different?
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And if there graphs were different, how could the two functions be the same?
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Cosine is cyclic. Every 2*pi revolutions of a unit vector brings the value back to the same value.
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