S-Cool Revision Summary

S-Cool Revision Summary

Pythagoras' Theorem

Trigonometry - basic facts

Note: Don't forget to square-root!

Sin, Cos, Tan

Notes:

1. Ways to remember:

  • SOH-CAH-TOA
  • Silly Old Horses Chase After Hens That Offer Advice
  • Formula Triangles

Sin, Cos, Tan

2. Sin, Cos and Tan are always with an angle.

3. If you're looking for an angle you need to use the inverses - sin-1, cos-1, tan-1,