Triggggggggg Maneeeeee.

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Across
  1. 4. often used to denote a variable in mathematics and physics
  2. 5. hypotnuse over opposite
  3. 7. opposite over adjacent
  4. 8. the longest side of a right-angled triangle
  5. 10. opposite of term given
  6. 13. opposite over hypotnuse
  7. 14. the standard unit of angular measure
  8. 16. a measure of an angle 360th of the unit circle
  9. 17. hypotnuse over adjacent
Down
  1. 1. gamma function (represented by the capital Greek letter Γ)
  2. 2. cosines looks like pythagorean theorem
  3. 3. most often used to represent unknown angles
  4. 5. adjacent over opposite
  5. 6. circle a circle with a radius of one
  6. 8. formula states that the area T of a triangle whose sides have lengths a, b, and c
  7. 9. is each group of three digits separated by commas in a multidigit number
  8. 11. angle the angle of less than 360
  9. 12. half the distance between the minimum and maximum
  10. 15. adjacent over hypotnuse