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Slade Maynard
Mathematics
31 January, 00:10
In two or more complete sentences, describe why the range of y = cos (x) is - 1 ≤ y ≤ 1. Make sure to reference the unit circle in your description.
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Ezequiel Duarte
31 January, 00:33
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The range of cos (x) is - 1 to 1 (with brackets if in interval notation as - 1 and 1 can be included) is because the radius of the unit circle is also 1. If the range went past - 1 or 1, the unit circle could not define those values, and would turn up as error or undefined. Now, if you replace a in y = acos (x) + b, the range would be different because you amplified the equation and thus the range and radius.
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» In two or more complete sentences, describe why the range of y = cos (x) is - 1 ≤ y ≤ 1. Make sure to reference the unit circle in your description.
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