A radian is very hard to understand but simple to explain It is a unit of angle. The radian is equal to an angle at the center of a circle. The arc of the circle is equal in length to the radius. Basically a radian is the Standard International unit of plane angular measure. Radians and circle unit have a very easy and simpple realtionship when you have a circle you have an angle of one radian. The formula of circumfrence is 2pir and the meaure of radians is 2pi (full circle). Radians and degrees relate directly becuase they convert into eachother. I perfere degress because they are easier to remember and what I was taught when i was younger. Radians seem more mathical because it is harder and more complicated.
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