Question

sin theta= -3/5 cos theta= 4/5

Answer 1

Have you considered drawing a right triangle? Of course, this is only guessing at what you might need, since you didn't actually post a question. You also showed none of your own work.

Answer 2

i need to find the four remaining trigonometric functions

Answer 3

Well, then do it.

tan(x) = sin(x)/cos(x)
sec(x) = 1/cos(x)
csc(x) = 1/sin(x)

Only one more to go. Let's see it.