function graphing

[Quadratica]

I have defined a function in CAS: angle(x,a)=(a*tan(x+a))+(a-sin(a*x))

I input x and a and it gives the expected answer.

is there a way to directly graph angle(x,2) or angle(x,-1) etc without manually changing 'a' in the definition of angle(x,a) ? changing 'a' in the definition is tedious if I want to plot several graphs for different 'a' .