1-Find a possible formula for the trigonometric function represented by the given table of values.

x=(0,2,4,6,8,10,12)

y=(4,0,4,8,4,0,4)

y=

2-find a possible formula for the trigonometric function represented by the given table of values

x=(0,pi/4,pi/2,3pi/4,pi,5pi/4,3pi/2)

y=(0,3,6,3,0,3,6)

y=