π Day Crossword Puzzle

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Across
  1. 1. When an angle is doubled or multiplied by 2. For example, 30∘ doubled is 60∘ .
  2. 4. ___ = cos/sin
  3. 5. ____ = 1/csc
  4. 8. ____ = 1/sec
  5. 9. A function which takes zero or more input values to a well-defined output value. Starts with Ope____
Down
  1. 1. The distance from one point on a circle through the center to another point on the circle. Written as d = 2r
  2. 2. Shows the relative sizes of two or more values. Written as (_:_)
  3. 3. Formula used to determine the exact values of the trigonometric ratios of angles such as 15° (half of the standard angle 30°)
  4. 6. A branch of mathematics that deals with shapes, sizes, angles, and dimensions of objects. (Think of triangles, right angles)
  5. 7. The ratio of a circles circumference to its diameter. (3.14 formal name)