Look at this cosine graph:
What happens when theta changes from to ?
As angle θ increases from π radians to 2pi radians, the cosine of θ
(1) increases throughout the interval
(2) decreases throughout the interval
(3) increases, then decreases
(4) decreases, then increases
Please, explain your answer not just select one form the choices.
Here is a graph of for the interval . http://upload.wikimedia.org/wikipedi...px-Cos.svg.png
Between and it can be seen that is always increasing (except at the exact points of and , which are stationary points)