Training Camp (cont 7)

Watch the Sinusoidal Functions Part 2 video to see more examples of solving problems using the graph of a sinusoidal function.

Now that you are familiar with the graph of a sinusoidal function, you can explore its correlation to the equation of the sinusoidal function.

To do this, you must be able to input a sinusoidal graph properly into your calculator. Recall from earlier in Training Camp that sinusoidal functions can use either degree or radian measure. When using a graphing calculator, you must set the MODE to reflect the appropriate measure for each question.

Step 1: Change the type of measure; press MODE, down arrow to scroll to Radian Degree.

Step 2: Select Radian; press ENTER.

OR Select Degree; press right arrow, ENTER.

Step 3: Return to the home screen; press 2^nd, MODE.

The Radian Degree feature will remain in the measure you choose unless the calculator memory is reset. This step is important to remember because the calculator memory is reset before all exams. The factory reset for this calculator is radians.

When you use a graphing calculator, you can use the π key to enter exact values in the settings for the viewing window. However, the calculator will convert the value to a decimal, as shown below: