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Convert from Radian Measure to Fractions on the TI-83 Plus

You can use the TI-83 Plus graphing calculator to express radian measures as a fraction, if possible. It’s much easier to know what the angle looks like in this form. You can quickly sketch the angle


but it would take me awhile to sketch the angle .5235987756 radians. It turns out that they are the same angle. To convert a radian measure to a fractional multiple of


use the following steps:

  1. If the radian measure is not the last entry in the calculator, enter it.

    The last line indicates that the radian measure of


    is the last entry in the calculator.

  2. Press


    to divide the radian measure by

  3. Press


    to display the fractional multiple of


    If the calculator can’t convert the decimal to a fraction, it just redisplays the decimal.

    The 1/6 in this figure indicates that the decimal radian measure (.5235987756) is equal to


    thus showing that


    is the polar form of the point

    Converting a decimal (radian measure) to a fraction.
    Converting a decimal (radian measure) to a fraction.
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