Trigonometry

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Across
  1. 3. opposite over hypotenuse
  2. 5. represents the degree on a triangle
  3. 6. hypotenuse over adjacent/ inverse of cosine
  4. 8. a curve having the form of a sine wave.
  5. 9. formula: formula used to calculate the area if all the sides of the triangle are given
  6. 13. opposite over hypotenuse
  7. 15. of cosine: SSS or SAS relationship on a triangle
  8. 16. equals to pi
  9. 17. functions: reciprocal to the three trigonometric ratios, sine, cosine, and tangent
  10. 18. across the right angle
  11. 19. one cycle
Down
  1. 1. hypotenuse over opposite/ inverse of sine
  2. 2. circle: a circle with a radius of one
  3. 4. adjacent over opposite/ inverse of tangent
  4. 7. adjacent over hypotenuse
  5. 10. maximum distance it ever reaches from zero
  6. 11. of elevation: the angle formed by the line of sight and the horizontal plane for an object above the horizontal
  7. 12. of Sine: AAS or ASA relationship on a triangle
  8. 14. a branch of mathematics dealing with the relations of the sides and angles of triangles
  9. 19. equals to 180 degrees