trig ratios

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Across
  1. 5. / the trigonometric function that is equal to the ratio of the side adjacent to an acute angle (in a right-angled triangle) to the hypotenuse.
  2. 6. / the longest side of a right triangle, opposite the right angle.
  3. 7. / having a common boundary or edge
  4. 8. / the quantitative relation between two amounts showing the number of times one value contains or is contained within the other.
  5. 9. / a plane figure with three straight sides and three angles.
Down
  1. 1. / having a position on the other or further side of something; facing something, especially something of the same type
  2. 2. functions / function of an angle expressed as a ratio of the length of the sides of right-angled triangle containing the angle
  3. 3. / the trigonometric function that is equal to the ratio of the side opposite a given angle (in a right triangle) to the hypotenuse.
  4. 4. / the trigonometric function that is equal to the ratio of the sides (other than the hypotenuse) opposite and adjacent to an angle in a right triangle.