Crossword Puzzle

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Across
  1. 5. The interval in which a trigonometric function repeats its values.
  2. 7. Equations involving trigonometric functions that are true for all values of the variables.
  3. 9. The number of cycles a function completes in a given interval.
  4. 10. A trigonometric function, abbreviated as
  5. 15. A trigonometric function, abbreviated as sec
  6. 17. Another relationship between the sides and angles in a triangle.
  7. 18. The angle from the horizontal downward to an object.
  8. 21. Relates complex exponentials to trigonometric functions.
  9. 22. trigonometric function, abbreviated as sin
  10. 23. The maximum value of a trigonometric function.
  11. 24. A trigonometric function, abbreviated as tan
  12. 25. A unit of angle measurement.
Down
  1. 1. The equation sin^2theta+ cos^2 theta = 1
  2. 2. Visual representation of trigonometric functions.
  3. 3. Another unit of angle measurement.
  4. 4. Functions such as arcsine, arccosine, and arctangent.
  5. 6. A trigonometric function, abbreviated as cot
  6. 8. Equations for trigonometric functions of twice an angle.
  7. 11. A relationship between the sides and angles in a triangle.
  8. 12. A circle with a radius of one, used to define trigonometric functions.
  9. 13. A formula for the area of a triangle.
  10. 14. The horizontal shift of a trigonometric function.
  11. 16. Equations for trigonometric functions of half an angle.
  12. 19. A trigonometric function, abbreviated as csc
  13. 20. The angle from the horizontal upward to an object.