Radians and degrees are two different units that your calculator will use to measure angles. The formula to compare the two units is 100 degrees = pi radians. When you enter the information about an angle into your scientific calculator, it will give you an answer either in units of radians or units of degrees. By following a few simple steps, you can determine which mode your calculator is in and switch it to the desired mode.

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#### Step

Enter the equation Sin(30). If the answer comes up 0.5, your scientific calculator is in degrees mode and does not need to be changed. If the answer comes up -0.988, your calculator is in radian mode and needs to be changed.

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Press the "Mode" button if your calculator was in radian mode. This should change your scientific calculator to degree mode or bring up a list of modes including degrees.

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Navigate to degrees mode if the list of modes comes up.