Trigonometry

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Across
  1. 1. (root 3)/2
  2. 3. (root 2)/2
  3. 4. (root 2)/2
  4. 6. cosine/sine
  5. 7. if the sum of two positive angles is 180 degrees
  6. 9. measurement of triangles
  7. 10. (root 3)/3
  8. 11. root 3
  9. 13. 1
  10. 14. 1/2
Down
  1. 1. hypotenuse/opposite
  2. 2. 1/2
  3. 5. hypotenuse/adjacent
  4. 6. if the sum of two positive angles is 90 degrees
  5. 7. opposite/hypotenuse
  6. 8. adjacent/hypotenuse
  7. 9. sine/cosine
  8. 12. (root 3)/2