Convert from Radian Measure to Fractions on the TI83 Plus
You can use the TI83 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:

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.

Press
to divide the radian measure by

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.