Question

how do you get the value of csc (5pi/4) with the unit circle

Answer 1

First, it helps to know this:

\( \csc x= \dfrac{1}{\sin x} \)

Answer 2

you use a "good" unit circle, a good one will have it there :)

Answer 3

oh, ohh csc, well csc = 1/sin as mathstudent55 said, so your "good" unit circle will have the sine functions too :)