# Trigonometry

posted by
**James**
.

A wheel is rotating at 200 revolutions per minute .find the angular speed in radians per second.

200 rpm

=200*2pi radians/1 minute (1 rotation = 2pi radians)

= 400pi radians/60 seconds

=20/3 radians/second

You can follow the same procedure for the other two questions you asked.