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need help number 2,3 ty

Question

anonymous · Answer

The sine function will be maximized for any multiple of pi/2.  For example three would be pi/2, 3*pi/2, 5*pi/2 radians

anonymous · Answer

As the terminal side of the angles rotate around the unit circle, the range value of cosine (or any trig function) is dependent only on the the position of the terminal side.

anonymous · Answer

Check out this animation that show how the sine/cosine functions are periodic. http://zonalandeducation.com/mmts/trigonometryRealms/trigonometryRealms.html

anonymous · Answer

3?

anonymous · Answer

Yes the link that shows the animation is for question 3 in your book