Circular Conversion
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Convert from any circular - angle unit to any other circular - angle unit (radian, etc). Enter a valid numerical circular, angle value in to the field below and choose from the lists what circular, angle units you want to make conversion between.
The selection of 360 as the number of degrees in a circle was probably based on the fact that 360 is approximately the number of days in a year. Its use is often said to originate from the methods of the ancient Babylonians. Ancient astronomers noticed
that the stars in the sky seem to advance in that circle by approximately one-360th of a circle, i.e., one degree, each day.
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Ancient calendars, such as the Persian Calendar, used 360 days for a year. Its application to measuring angles in geometry can possibly be traced to Thales, who popularized geometry among the Greeks and lived in Anatolia among people who had dealings with Egypt and
Babylon.
PLEASE NOTE: Circular measure conversion is easy to use. Type your value next to the unit you want to convert and click "Convert" button.
Available Conversion Units: circumference (circle), sextant, radian (rad), degree (deg), grade (grad), minute ('), second (''), nautical rhumb, russian thousandth, german thousandth
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