You are given
Cos(theta) = -(5/13) .0<theta<2pi
In which quadrant(s) can the terminal arm be,.
I believe quadrants 2 and 4 but the back of the book is saying 2, and 3 (Angry)
I think it is 2 and 4 because the points of its location could be (-5, 13) Q2 or (5, -13) Q4
If i am wrong how do i solve it?