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Trigonometry

Trigonometry explores the relationships between angles and side lengths in triangles.

In these videos you'll learn:

  • how to use basic trigonometric functions(eg sin, cos, tan) to find side lengths and angles in triangles
  • rules and identities involving these functions
  • how to convert between degrees and radians.

Click on the 3-bar menu icon in the top left of the video to navigate to different videos in the playlist.

Playlist order:

  1. Pythagoras Theorem
  2. Trig ratios 1
  3. Trig ratios 2
  4. Trig identities 1
  5. Trig identities 2
  6. Trig identities 3
  7. Converting angles: deg to rad
  8. Converting angles: rad to deg
  9. Solving trig equations 1
  10. Solving trig equations 2
  11. Solving trig equations 3
  12. Solving trig equations 4
  13. Solving trig equations 5
  14. Cosine Rule 1
  15. Cosine Rule 2
  16. Sine Rule