How can i answer this? its about modifications of trigonometric functions

Questions
1

En an ecosystem the number of prey and predators tend to vary.
In a region ranging populations of coyotes and hares.

C = COYTES
H = HARES 
t = time in years.

H = 1000 + 200Sin (pi*t/10)                                     C = 200 + 100Sin (pi*t/10 - pi/2)
  • Graph.
2

Hi Interesting Puzzle ,Find Attachment,Enjoy!