Unit 3 Crossword

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Across
  1. 3. two objects are similar if they have the same shape, or one has the same shape as the mirror image of the other.
  2. 6. ratio of the adjacent to the opposite side of a right-angled triangle. Looks like ‘cot’.
  3. 7. two triangles are similar if they have the same shape, or one has the same shape as the mirror image of the other.
  4. 10. the inverse function of tangent. Looks like O/A ^-1
  5. 12. the angle from the horizontal upward to an object. An observer's line of sight would be above the horizontal.
  6. 15. the side that is next to, or adjacent to an angle. Used in cosine and tangent.
  7. 16. one of the three most common trigonometric functions. Opposite/hypotenuse
  8. 17. a branch of mathematics. Studies the relationship between side lengths and angles of triangles.
  9. 18. a function obtained by expressing the dependent variable of one function as the independent variable of another; f and g are inverse functions if f(x)=y and g(y)=x. The inverse functions are called the arcsine, arccosine, and arctangent, respectively.
  10. 19. the side that is the longest on a triangle. Used in sine and cosine.
Down
  1. 1. a triangle with one right angle. The basis of trigonometry.
  2. 2. the inverse function of cosine. Looks like ‘O/H ^-1’.
  3. 4. the angle from the horizontal downward to an object
  4. 5. function of an angle expressed as a ratio of the length of the sides of right-angled triangle containing the angle
  5. 8. the inverse function of sine. Looks like A/H ^-1
  6. 9. either of two angles whose sum is 90°.
  7. 11. of or relating to or according to the principles of trigonometry. Sine, Cosine, and Tangent are functions in this topic.
  8. 13. the side that is across from a given angle. Used in trigonometry.
  9. 14. one of the three most common trigonometric functions. Adjacent/hypotenuse
  10. 17. one of the three most common trigonometric functions. Opposite/adjacent.