Hey guys.

I'm kind of new to this program.

In 1.jpg there is the question and in 2.jpg I showed what I tried to do.

The problem is that nothing is being shown on the plot, any Idea what I'm supposed to do?

Here is y[x]:

y[x] = (55 (40 + \[ImaginaryI] 20 + \[ImaginaryI] 55 Tan[180 x/2]) -

75 (55 + \[ImaginaryI] (40 + \[ImaginaryI] 20) Tan[

180 x/2]))/(55 (40 + \[ImaginaryI] 20 + \[ImaginaryI] 55 Tan[

180 x/2]) +

75 (55 + \[ImaginaryI] (40 + \[ImaginaryI] 20) Tan[180 x/2]))

Thanks a lot.