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Across 1. Another name for the solution of an equation. 5. The common log of 1000. 9. The multiplicative inverse. 12. The ratio of the opposite leg to the hypotenuse. 13. Lines having a slope of zero. 14. The ratio of the adjacent leg to the hypotenuse. 16. Angle from horizontal down to the line of sight. 18. The reciprocal of the sine. 19. The square root of a negative number. 21. b^2 - 4(a)(c) 26. Four times three times two times one, for example. 27. Has equation x^2 + y^2 = r^2 28. The nth power of a. 31. A two-term algebraic expression. 34. Angle from horizontal up to line of sight. 35. Has equation y = ax^2 + bx + c 37. 6 in the term 6^x. 38. Set of all the input values of a function.

Down 2. The additive inverse. 3. One complete cycle of a trigonometric function 4. Lines having no slope. 6. Another name for the inverse sine. 7. Cofunction of the tangent. 8. The natural log of 1. 10. A function having a positive slope. 11. 5 in the term 5x^2. 12. The change in y divided by the change in x. 15. Having the same terminal side. 17. The ratio of the opposite leg to the adjacent leg. 20. Set of all output values of a function. 22. F(g(x)). 23. A three- term algebraic expression. 24. Lines having equal slopes. 25. The reciprocal of the period. 29. A set of ordered pairs. 30. A letter used to represent a number. 32. Has equation y = mx + b 33. A radial angle. 36. The natural log of e.