Angle Measurement
Angles can be measured in any of the following units:
|
Degrees, minutes, and seconds. A full circle is 360 degrees. 60 minutes is a degree. 60 seconds is a minute. |
Degrees, with decimals. A full circle is 360 degrees. |
Radians A full circle is 2*pi radians. Recall that pi is approximately 3.14159 |
Grads A full circle is 400 grads. The point is that a right angle is 100 grads. An early part of the metric system. |
More information about angle measurement history:
Discussion about grads: http://mathforum.org/library/drmath/view/55451.html
Introductory info about angles:
A good introductory site: http://www.nzmaths.co.nz/HelpCentre/Seminars/angle.htm