Degrees and radians
There are angular units used other than degrees. In this course, we will largely use radians as the unit of an angle. There is a connection between radians and degrees
The relationship between degrees and radians will become clearer in the next section, 'The unit circle'.
Convert to 180°, 90° and 45° into radians.
Since 360 ° = 2𝛑 radians, then
How many radians is 20°?
First we find how many radians is one degree
Now we can multiply it by 20
How many degrees is 2,1 radians?
First we find how many degrees is one radian
Now we can multiply it by 2,1
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