Answer:

Step-by-step explanation:
The generating function a(x) produces a power series ...

where the coefficients are the elements of the given sequence.
We observe that the given sequence has the recurrence relation ...

This can be rearranged to ...

We can formulate this in terms of a(x) as follows, then solve for a(x).

The generating function is ...
a(x) = 1/(1+2x)
The answer is
<span>360 degrees = 2 pi
120 degrees = '(2pi x 120) /360 =3pi/2</span>
The |*| symbols take away the negative value of a number. So |-3| is just “3”. I can explain more if needed :)