Instructional Video
Khan Academy

Khan Academy: Amplitude & Period of Sinusoidal Functions From Equation

9th - 10th Standards
This video shows how to determine the amplitude and period of a trigonometric function. [8:20]
Instructional Video
Khan Academy

Khan Academy: Amplitude & Period of Sinusoidal Functions From Equation

10th
Sal finds the amplitude and the period of y=-0.5cos(3x).