angle x is in the second quadrant and angel y is in the first quadrant and angle y is in the first quardrant such that sin x=5/13 and cos y = 3/5. Determine and exact value for cos x.

Answer 1

check your typing of the question, you have some information here that is not needed.
Is there more to the question?

if sinx = 5/13, and x is in quad II
then cosx = -12/13 (from the 5,12,13 triangle)