Question

how do you find the radiant and degree when given a ratio

Answer 1

If those are principal values of the trigonometric ratios, you can recall what value of theta gives the required value for the given trigonometric ratio. It would be more easy for me to make you understand if you post the specific question.

Answer 2

The value of theta if in degrees can be converted into radians, just remember that pi radians=180 degrees, you can then use unitary method to find the required degree in radians or vice-versa.