by: Romyrl Mestiola

-Angle that forms when two radii meet at the center of a circle. 

- The arc that is formed when segments intersect portions of a circle.

- The graph of a sine fuction.

-A signal waveform in which each point on the wave occurs exactly 1/4 cycle earlier than those in the sine wave.

-Measure of a central angle of a circle that intercepts an arc equal in length to a radius of the circle.

- Half the difference between the maximum and minimum values of the function.

-The horizontal length of one cycle of a periodic function. Period = 2 (pi)/b.

-Angles in standard position (angles with the initial side on the positive x-axis) that have a common terminal side. 

- A horizontal translation of a periodic function.