You do not convert. STERADIAN is a two dimensioal measurement RADIAN is a one dimensional measurement.
Just as you cannot convert area into degrees (of angular measurement)
There are 2*pi stradians or tau steradians in a hemisphere.
There is no "radian of a straight line", as far as I know. A radian is a unit of angular measurement - defined in such as way that a complete circle (also known as 360°) is equivalent to 2 x pi.
1 revolution = 2 x pi radians. Therefore, 1 radian = 1 / (2 x pi) revolutions.
No such conversion is possible. Feet are a measure of distance or linear displacement whereas a radian is a measure of angular displacement. The two measure different things and it is not possible to convert form one to the other.
On many calculators, the MODE key/button is to set the calculator into degrees or radian angle measurment, that is, when you enter a value, it and all further values you enter will then either be understood by the calculator as a degrees or radian value for an angle.
-1.257 radian
0.3491 radian (rounded)
Because a radian is a far more versatile unit of measurement, especially in advanced mathematics.
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1 revolution = 2pi radians therefore; 1 radian = 1revolution/2 pi radians = 0.159154943 revolution
Degrees = (180/pi)*Radians
1 rotation/1 min * 1 min/60s * (2*Pi radian/1 rotation)
There are 2*pi stradians or tau steradians in a hemisphere.
The SI unit for measuring solid angles is a steradian : the stereo version of the 2-dimensional unit, the radian. The maximum value of a 3-d angle is 4*pi steradians which is approx equal to 41253 degrees.
Multiply the degree measure by (1/(180 times pi))