How do I verify the trig identity?

Which graph represents an even function?

What are the coordinates of the point that is 1/3 of the way from a to b? a (2,-3) b (2,6)

Prism m and pyramid n have the same base area and the same height. cylinder p and prism q have the same height and the same base perimeter. cone z has the same base area as cylinder y, but its height is three times the height of cylinder y. the figures and have the same volume.