Percent into ratio words problem

First you need to  convert the given percentage into fraction by dividing it by 100 and removing percentage symbol (%).
Then you reduce the fraction into simplest forms.
Finally you write the  fraction turned simplest form to a ratio by writing 
the numerator first,then the denominator.
Example:50%=.

=1:2

Tan(20)=4/x
x=4/tan(20)

Make sure your calculator is in degree mode