ok i dont understand this:

"which of the following trigonometric values are NEGATIVE?"

I. sin(-292°)

II. tan(-193°)

III. cos(-207°)

IV. cot222°

ok i have the answer key and apparently it's II and III

but i thought it was I and II

in my math book it says cos(-Θ) = cosΘ

so how the heck is III negative????

ok is this answer key wrong b/c that makes *no sense*!!!!!