| A | B |
|---|
| Amplitude | Half the difference between the minimum and maximum values of the range. |
| Central Angle | An angle in a circle with vertex at the circle's center. |
| Cosine | The trig function that can be found by dividing the length of the adjacent side by the length of the hypotenuse. |
| Coterminal Angle | Angles which, drawn in standard position, share a terminal side. For example, 60°, -300°, and 780° are all coterminal. |
| Hypotenuse | The side of a right triangle opposite the right angle. |
| Period | The horizontal distance required for the graph of a periodic function to complete one cycle. |
| Radian | A unit for measuring angles where the angle equals the number of radii it takes to measure a circular arc described by that angle. |
| Sine | The trig function that can be found by dividing the length of the opposite side by the length of the hypotenuse. |
| Tangent | The trig function that can be found by dividing the length of the opposite side by the length of the adjacent side. |
| Trigonometry | The study of triangles, with emphasis on calculations involving the lengths of sides and the measures of angles. |
