Im not sure if I can get an answer for this because it was on a test and I dont totally remember but heres what I can remember.

there was an equation given something like 1/cotΘ.... and quarantines were given like (6,19) (might have been (.6,.19) or something) and the answers given where something like √19/6.

I know its not alot to work with but how do you solve something that gives quardanates on a unit circle and an equation?