Trigonometry Vocabulary and Definitions.

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Across
  1. 2. - A formula to find a side or angle in any triangle when you know two sides and the included angle.
  2. 5. - The ratio of the adjacent side to the hypotenuse (Cos = adj/ hyp).
  3. 7. - A circle with a radius of 1, used to visualize trigonometric functions.
  4. 8. - A formula used to find missing sides or angles in a triangle using ratios of side lengths to their opposite angles.
  5. 10. - The ratio of the opposite side to the adjacent side (Tan = opp/adj).
  6. 13. -Represents angles in radians.
  7. 15. - A line a graph approaches but never touches.
  8. 17. - The ratio of the opposite side to the hypotenuse (Sin = opp/hyp).
  9. 18. - The positive acute angle formed by the terminal side of and the x-axis.
  10. 19. - The longest side of a right triangle, opposite of the right angle.
Down
  1. 1. - The side next to the reference angle.
  2. 3. - The side across from the reference angle.
  3. 4. - The angle formed from the horizontal line looking downward.
  4. 6. - An equation that is always true for all values of the variables.
  5. 9. - Unit of angles measured based on arc length, one radian is the angle where the arc length equals the radius.
  6. 11. - Pi/180 Radians.
  7. 12. - The position after rotation of the ray.
  8. 14. - Measured in degrees or radians, defined by initial and terminal sides of a coordinate plane.
  9. 15. - The amount of space inside a triangle.
  10. 16. - The set of all possible output values a function can produce, determined by its domain (input angles).