Question

y=cosx-3
can i also know exact values to plug in so i get exact values
help!!!!!!

Answer 1

Are you asked to graph this?

Answer 2

yes

Answer 3

60 for example

Answer 4

I would plug in y-values and then solve for x. This way you will get exact values, .... you know what I mean ?

Answer 5

can you show me an example please?

Answer 6

Ok, well the original cos(x) graph will look like this

Answer 7

This is a little off track, but would you happen to know what the unit circle is? It would make your exact value problem a lot easier to solve.

http://www.mathsisfun.com/geometry/unit-circle.html