Question

How many radians is 60 degrees?

Answer 1

pi/3 radians is 60 degrees

Answer 2

pi radians = 180 degrees 

So: 
1 degrees = pi / 180 radians 

Now we can convert any number of degrees into radians by multiplying it by pi/180 

So: 
60 degrees = 60 * pi / 180 = pi * 60 / 180 = pi * 1/3 = pi / 3 radians