Trigonometry Crossword

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Across
  1. 2. having a common boundary or edge
  2. 5. a straight line that intersects a curve at two or more points
  3. 7. the space between two lines or planes that intersect
  4. 8. ratio of the adjacent side to the hypotenuse of a right-angled triangle
  5. 10. a line that touches a curve at only one point
  6. 11. of or relating to or according to the principles of trigonometry
  7. 14. the inverse function of the tangent
Down
  1. 1. what something is used for
  2. 3. the inverse function of the sine
  3. 4. ratio of the adjacent to the opposite side of a right-angled triangle
  4. 6. ratio of the hypotenuse to the opposite side of a right-angled triangle
  5. 9. the inverse function of the cosine
  6. 12. a function obtained by expressing the dependent variable of one function as the independent variable of another
  7. 13. ratio of the length of the side opposite the given angle to the length of the hypotenuse of a right-angled triangle
  8. 15. equal to the angle at the center of a circle subtended by an arc equal in length to the radius