Change from degree measure to radian measure in terms of pie

-320 degrees

To change to radians multiply it by pi/180.

To convert from degree measure to radian measure, you can use the relationship that 180 degrees is equal to pi radians.

To convert -320 degrees to radians, first, we need to find the equivalent positive angle in degrees. We can do this by adding 360 degrees to -320.

-320 degrees + 360 degrees = 40 degrees

Now, we can convert this positive angle from degrees to radians.

Since 180 degrees is equal to pi radians, we can set up a proportion:

180 degrees = pi radians
40 degrees = x radians (the angle we want to convert)

Cross-multiplying the proportion:
180x = 40 * pi

Dividing both sides by 180:
x = (40 * pi) / 180

Simplifying:
x = 2 * pi / 9

Therefore, -320 degrees is equal to -2 * pi / 9 radians in terms of pi.