Pedro's Awesome and very elaborate Crossword if you fail this you probably FAIL at life

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Across
  1. 2. height of a wave
  2. 3. Flip the fraction
  3. 7. inverse of sin
  4. 8. (Cos/Sin)
  5. 9. study of triangles
  6. 11. Angle Angle equal to another angle
  7. 14. Its the LAW! says sine
  8. 15. Tan=(?/cos)
  9. 16. time
  10. 17. (Sin/Cos)
  11. 18. I dont like LAWS says Cosine
Down
  1. 1. a circle
  2. 4. Largest side of a triangle
  3. 5. 180
  4. 6. S=A+B+C/2
  5. 10. pie over 2
  6. 12. Adjacent over Hypotenuse
  7. 13. If you're a senior we are this CLASS!
  8. 17. three sided figure
  9. 19. inverse of cos