A bird sits on the branch of a tree, then starts to fly. The height of the bird is described by the function⁡. y=0.6sin(pix/12)+35 where y represents the height of the bird measured in meters, and x represents the number of seconds since the bird left the branch.

Which function expresses y, the number of seconds since the bird left the branch, as a function of x, the height of the bird in meters?