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The maximum distance of the values of a periodic function above or below the midline.
used in:
The value halfway between the maximum and minimum values of a period function. Also the horizontal line whose -coordinate is that value.
The length of an interval at which a periodic function repeats. A function has a period, , if for all inputs .
A function whose values repeat at regular intervals. If is a periodic function then there is a number , called the period, so that for all inputs .
The identity relating the sine and cosine of a number. It is called the Pythagorean identity because it follows from the Pythagorean theorem.
The circle in the coordinate plane with radius 1 and center the origin.
