Trigonometry

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Across
  1. 2. abbreviations of cosine, secant, and tangent respectively
  2. 4. sin(A-B)
  3. 6. Identities that use the Pythagorean Theorem
  4. 9. tan45/cot45
  5. 10. 1/cosine
  6. 11. 1/tangent
Down
  1. 1. Square root of (x^2+y^2). Whole word
  2. 2. cos(A-B)
  3. 3. 1/cosecant
  4. 5. (cos60+cos60+cos30)/(sin60+sin30+sin60)
  5. 7. sine/cosine
  6. 8. Inverse function of tangent