Paul green

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Across
  1. 1. Theorem: a² + b² = c²
  2. 4. One of four sections of the coordinate plane
  3. 5. Measured in degrees or radians
  4. 7. Circle of radius 1 used in trigonometry
  5. 10. Angle less than 90 degrees
  6. 11. Flying mammal
  7. 12. Polygon with three sides
  8. 18. Opposite over hypotenuse
  9. 19. Horizontal shift in a trigonometric function
  10. 20. Equations true for all values in domain
  11. 21. Reciprocal of cosine
  12. 24. Large marsupial
Down
  1. 1. Describes functions that repeat values over intervals
  2. 2. Sine divided by cosine
  3. 3. Number of cycles per unit interval
  4. 6. Angle measure based on arc length
  5. 8. Reciprocal of tangent
  6. 9. Likes to chase mice
  7. 13. Has a trunk
  8. 14. Adjacent over hypotenuse
  9. 15. Height from midline to peak in a sine wave
  10. 16. Traditional unit of angular measurement
  11. 17. Longest side of a right triangle
  12. 22. Reciprocal of sine
  13. 23. Man's best friend