Is the graph a sine or cosine graph and which function should you use when writing the equation. We discuss sine and cosine equations in this free math video tutorial by Mario's Math Tutoring.

0:11 Example 1 Write the Equation of the Sinusoidal Graph
0:42 Draw Midline of Graph to Find Vertical Shift
1:10 How to Find Amplitude
1:30 Deciding Whether to Use Sine or Cosine
1:40 Parent Function Graphs for Sine and Cosine
2:01 How to Calculate the Period
2:27 Formula for Calculating the Period
2:58 Representing the Graph as a Reflected Cosine Equation
3:37 Representing the Graph with a Sine Equation
4:22 Representing the Graph with a Reflected Sine Equation
4:56 Representing the Graph with a Shifted Cosine Equation

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