What does tan px and tan qx mean?

[r_swayze]

Can somebody explain what does tan px and tan qx mean?

The problem is:

lim as x goes to 0 tan px / (tan qx)

I know its a calculus problem but I want to know what those trigonometric expressions are first

 

[nicksauce]

p and q are presumably just some real numbers. If you know what tan(x) is, then you should know what tan(px) is.

 

[jacksonpeeble]

I agree, they're probably just variables since functions sound unlikely.