Learn how to determine the equation of a transformed sinusoidal function. You must determine the parameters a, k, d, and c so that the function can be written in the format y=asin[k(x-d)]+c or y=acos[k(x-d)]+c. You will analyze the amplitude, period, phase shift, and vertical shift to be able to write the equations. Go to for FREE resources that accompany this lesson. 0:00 Explanation of Transformations 6:53 Example 1a 10:39 Example 1b 14:39 Example 1c 17:12 Example 2 20:22 Example 3