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Text File  |  1992-04-13  |  396b  |  18 lines
  1. sin(x)^2 + cos(x)^2 = 1
  2. tan(x)*cot(x) = 1
  3. sin(x)*csc(x) = 1
  4. cos(x)*sec(x) = 1
  5. sec(x)^2 - tan(x)^2 = 1
  6. csc(x)^2 - cot(x)^2 = 1
  7.  
  8. sin(x)^2 = 1/2 - cos(2*x)/2
  9. sin(x)^3 = 3/4*sin(x) - sin(3*x)/4
  10. cos(x)^2 = 1/2 + cos(2*x)
  11. cos(x)^3 = 3/4*sin(x) + sin(3*x)/4
  12.  
  13. sin(x)*sin(y) = -cos(x+y)/2 + cos(x-y)/2
  14. cos(x)*cos(y) = cos(x+y)/2 + cos(x-y)/2
  15. sin(x)*cos(y) = sin(x+y)/2 + sin(x-y)/2
  16.  
  17. end
  18.