Khan+Video+Notes

=Video #1= - In a Sine Function, when x = 0, y= 0 - The sine of 0 radians is 0 - The period of this function is the distance to the repetition of the wave - The Cosine of 0 radians is 1 - The tangent function is equal to the y over the x on the unit circle - Tangent is equal to Sine over Cosine - Adding a coefficient, brings the waves closer together - The height of the oscillation is the amplitude - Adding a number before the function, makes the amplitude bigger/smaller media type="youtube" key="QmxMPPkZpME" height="315" width="420"

=Video #2= - 2pi over the period is the equation to use to find the period - The sine of 0 is 0 - Using the graph you look to see how often the function repeats, and the amplitude - The Cosine of 0 is 1 media type="youtube" key="vHYI93UV5Kg" height="315" width="420"

=Video #3= - First look for period and amplitude when going reverse in naming the function - Amplitude is amount that it moves above or below the x-axis - Period is how many radians it goes through to complete one cycle - The Cosine of 0 is 1 and the Sine of 0 is 1 media type="youtube" key="NIG3l8oWKYE" height="315" width="420"