Periodic behavior

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Across
  1. 2. length of one repetition or cycle
  2. 3. one complete repetition of a periodic graph
  3. 4. occurs at the bottom of a trough
  4. 6. the graph oscillates about a horizontal line
  5. 7. vertical distance between a maximum or minimum point and the principal axis
  6. 9. trigonometric function that models periodic motion and oscillates smoothly above and below the horizontal axis
  7. 10. branch of mathematics that studies the relationships between angles and sides of triangles and trigonometric functions
Down
  1. 1. trigonometric function that represents the ratio of sine to cosine
  2. 2. repeats itself over and over in a horizontal direction.
  3. 5. occurs at the top of a crest
  4. 8. trigonometric function similar to sine, but it starts at a maximum value when the input is zero