Trigonometry

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Across
  1. 2. a set of possible values of the independent variable
  2. 5. any of the four areas into which a plane is divided
  3. 7. a straight line extending from a point
  4. 8. Two trigonometric functions, such as sine and cosine, for which the value of the first function at an acute angle equals the value of the second function at the complement of that angle.
  5. 9. a measure for arcs and angles
  6. 10. a mathematical relation associating elements between sets
Down
  1. 1. ratio of the hypotenuse to the adjacent side of a right-angled triangle
  2. 3. the point at which a line intersects a coordinate axis
  3. 4. ratio of the opposite and adjacent sides of a right triangle
  4. 6. the side of a right triangle opposite the right angle
  5. 7. set of values of a variable for which a function is defined