Question

exact value of: csc (11pi)/4

Answer 1

Are you looking for \[\frac{\csc(11\pi)}{4}\] or \[\csc(\frac{11 \pi}{4})\]?

Answer 2

find \(\frac{11\pi}{4}\) on the unit circle on the last page of the attached cheat sheet
then look at the coordinates
the second coordinate is sine, the cosecant is the reciprocal of that

Answer 3

actually that is not much help i see because you will not find \(\frac{11\pi}{4}\) but if you subtract \(\frac{11\pi}{4}-2\pi \) you get \(\frac{3\pi}{4}\) which is coterminal, use \(\frac{3\pi}{4}\) instead