Steply

Trigonometry

17 lessons · 354 problems solved step by step

  1. Degrees and radians (23 problems)
  2. Arc length and sector area (20 problems)
  3. The unit circle (20 problems)
  4. Trig of any angle (21 problems)
  5. Graphs of sine and cosine (20 problems)
  6. Graph of tangent (20 problems)
  7. Graphs of sec, csc and cot (20 problems)
  8. Inverse trig values (21 problems)
  9. Trig identities (21 problems)
  10. Sum and difference identities (23 problems)
  11. Double-angle identities (20 problems)
  12. Trig equations (24 problems)
  13. Multiple-angle equations (20 problems)
  14. Trig equations like quadratics (20 problems)
  15. The law of sines (20 problems)
  16. The law of cosines (21 problems)
  17. Area of a triangle with sine (20 problems)