Question: cos multiplication

Dear All,

I am trying to solve the following equation but I don't know what I am missing:

A:=0.0032*cos(19*theta+18*w*t);

B:=0.0014*cos(19*theta+18*w*t+phi);

T:=A+B;

theta = theta,  w=w and t=t  phi =Pi/6

when I try to add them it gives very long answer.    

Your help in this regard will be highly appreciated.

Best Regards

A.Q

Soton

 

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