3cotx+1=4. what is the solution set

3cot(x) + 1  =  4

--->   3cot(x)  =  3

--->     cot(x)  =  1

If cot(x) = a/b, then tan(x) = b/a

--->   tan(x) = 1

--->         x  =  tan^-1(1)

--->         x  =  45^o ± n·180°

Thanks Geno :)