This is the question

if cos (23)=P, without calculator, find in terms of P Tan (203).

I know that im going to start with

tan (180+23). But I dont know whats going to be the next step?

Im stuck with this

so im using this formula

tan(x+y)=tan180+tan23

--------------

1-tan180tan23

but Im stuck with this please help. Thanks in advance!