# Math C30 Terminology

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## Across

3. an equation in the form (x - h)^2 + (y - k)^2 = r^2

4. the set of points such that the absolute value of the difference of their distance from two fixed points is a constant

8. (r)/(x-coordinate)

9. where is the sine of any angle is equal to the cosine of its complement

10. a set of points the sum of whose distances from two fixed points is a constant

14. the distance from the fixed point of a circle to its circumference

15. reciprocal of tan

20. reciprocal of sec

22. portion of a circle bounded by two radii and the arc of the circle

23. angles resulting from a counter clockwise rotation

25. point of intersection of the axis of symmetry and the curve of a quadratic function

28. reciprocal of csc

30. formed by revolving a ray about a stationary ray

31. cos(-x) = cosx is referred to as a _______ identity

33. a statement of equality that may be satisfied by none, one , or more values of the variable

34. arc of a circle equal in length ot the radius

37. sin^2x + cos^2x = 1 is referred to as a ________ identity

38. fixed point of a circle

39. (r)/(y-coordinate)

42. maximum or minimum value of a circular function

43. 60 parts of a degree

47. cscx = 1/sinx is referred as a ______ idenitty

50. a line perpendicular to the directrix in a parabola

52. an angle with its vertex at the origin and the initial side coincides with x-axis

53. tanx = sinx/cosx is referred to as a _______ identity

## Down

1. longer axis in an ellipse

2. the curve that results when a cone intersects a plane

5. a straight line that approaches a curve but never touches it

6. shorter axis in an ellipse

7. the axis of a hyperbola similar to the minor axis in an ellipse

11. a line parallel to the directrix passing through the focal point

12. a set of points a given distancet from a fixedl point

13. the fixed point of a parabola

16. four regions of a coordinate plane

17. 1/360 th of a revolution

18. the axis of a hyperbola similar to the major axis in an ellipse

19. (x-coordinate)/(y-coordinate)

21. reciprocal of sin

22. 60 parts of a minute

23. the graph of a function repeats itself

24. reciprocal of cot

26. another name for revolving ray

32. an equation in the form Ax^2 + By^2 + Cx + Dy + E = 0

35. angles resulting from a clockwise rotation

36. another name for stationary ray

40. (side opposite)/(hypotenuse)

41. the hyperbola of the form xy = k

44. a circle of radius 1 and centre at the origin

45. a set of points equidistant from a fixed point and a fixed straight line

46. the distance from a fixed point in an ellipse to the curve

48. the fixed line of a parabola that never touches or crosses the curve

49. an equation that is satisfied by all values of the variable that are in the domain of each side of the equation

51. reciprocal of cos

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