The best replacement for sine is cosine.

The best alternatives to sine are rated as following:
★★★★★  cosine
★★★  cosine graph
★★  sine
★  cosine rule
★  secant
★  line
★  tangent
★  cosine law
★  cosign
★  modified sine
★  arcsin
  pure sine
  arcsine
  cosine graphs
  random vibration
  inverse sine
  law of cosine
  true sine

Your alternative for sine is not listed? Suggest!
Speaking about sine, one probably shouldn't forget about phase shift.

Other search terms related to sine and their ratings are:
★★★★★ phase shift
★★★★ sine
You have in mind a companion for sine and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of sine in all years. Click on graph for more.
sine
cosine
cosine graph