TRIGONOMETRY

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Across
  1. 4. the relationship in quantity, amount, or size between two or more things
  2. 5. abbreviation is sin
  3. 7. the study of relationships between the sides and angles of a triangle.
  4. 10. adjacent side divided by the hypotenuse:
  5. 11. share the common vertex and side.
  6. 12. a polygon with three sides having three vertices
  7. 13. derived from the Latin word “angulus”
Down
  1. 1. non-adjacent angles formed by two intersecting lines
  2. 2. the side opposite the right angle of a right-angled triangle
  3. 3. The theorem named after the Greek mathematician
  4. 6. (in a right-angled triangle) the ratio of the side (other than the hypotenuse) adjacent to a particular acute angle to the side opposite the angle.
  5. 8. sec x = 1 / cos x.
  6. 9. trigonometric ratios of the angle.