pi radians = 180 degrees
so 1.05 radians = 1.05*180/pi = 60.16 degrees (approx).
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(x radians / second) x (1 revolution / 2 pi radians) x (60 seconds / minute)= (60x) / (2 pi) (revolution / minute)Multiply (radians per sec) by (60)/(2 pi) = 9.5493(rounded) to get RPM.
-5.58505361 radians.
One revolution is 360 degrees or 2 pi radians ( full circle) So 13 rev = 13 x 60 degrees or 13 x 6.28 radians
divide by 60 minutes per hour
First, get the 12 degrees and 28 minutes into decimal form by adding 28/60 to 12, obtaining 12.46667 degrees. Then multiply by pi / 180 to convert to radians, obtaining 0.2175844 radians.