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Across
  1. 1. Ratio of the hypotenuse to the adjacent side of a right-angled triangle
  2. 5. The secant of the complement.
  3. 8. A unit of measure for angles equal to 1/60 of a minute,
  4. 11. The study of the metrics of triangles in particular and angular figures in general.
  5. 12. The sine of the complement.
  6. 14. A unit of measure for angles equal to 1/400 of a full circle.
  7. 15. A unit of measure for angles equal to 1/360 of a full circle.
Down
  1. 2. The difference between a right angle and the angle.
  2. 3. Ratio of the opposite side to the adjacent side of a right-angled triangle
  3. 4. A unit of measure for angles equal to 1/60 of a degree.
  4. 6. A circle with a diameter
  5. 7. The side opposite the right angle of a right-angled triangle.
  6. 9. Ratio of the opposite side to the hypotenuse of a right-angled triangle
  7. 10. The tangent of the complement.
  8. 13. A unit of measure for angles; one radian is the angle subtended by an arc that has a curved length equal to the radius of the arc.