Trig Crossword Puzzle

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Across
  1. 1. angles in standard position that have a common terminal side
  2. 4. sin^(-1)x
  3. 8. a^2+b^2=c^2
  4. 10. the acute angle between the terminal side and the x-axis
  5. 12. 1/cosx
  6. 13. studies relationships between the sides and angles of triangles
  7. 16. cos^(-1)x
  8. 18. 1/sinx
  9. 20. values that we get when solving eqns that aren't really solns
  10. 21. the side of a right-angled triangle that is opposite the right angle
Down
  1. 2. amount by which the graph of the function travels above and below its midline
  2. 3. tan^(-1)x
  3. 5. the set of all values for which the function is defined
  4. 6. 1/tanx
  5. 7. the set of all output values (Y-values)
  6. 9. opposite/adjacent
  7. 11. radius 1 centered at the origin of the rectangular coordinate system
  8. 14. adjacent/hypotenuse
  9. 15. a closed two-dimensional shape with three straight sides
  10. 17. opposite/hypotenuse
  11. 19. the length of one complete cycle for a trig function
  12. 22. 2sinxcosx