Math and Science: Trigonometry

Learning trigonometry is as easy as pi with this list of essential terms. Review basic trigonometric functions, including sine, cosine, and tangent, as well as different types of triangles.
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Full list of words from this list:

words only definitions & notes
  1. adjacent
    having a common boundary or edge
  2. angle
    the space between two lines or planes that intersect
  3. arccosine
    the inverse function of the cosine
  4. arcsine
    the inverse function of the sine
  5. arctangent
    the inverse function of the tangent
  6. asymptote
    a straight line that is the limiting value of a curve
  7. circle
    a plane curve with every point equidistant from the center
  8. circular function
    function of an angle expressed as a ratio of the length of the sides of right-angled triangle containing the angle
  9. complementary angles
    two angles whose sum is a right angle
  10. coordinate system
    a system that uses coordinates to establish position
  11. cosecant
    ratio of the hypotenuse to the opposite side of a right-angled triangle
  12. cosine
    ratio of the adjacent side to the hypotenuse of a right-angled triangle
  13. degree
    a measure for arcs and angles
  14. domain
    a set of possible values of the independent variable
  15. function
    a mathematical relation associating elements between sets
  16. hypotenuse
    the side of a right triangle opposite the right angle
  17. intercept
    the point at which a line intersects a coordinate axis
  18. inverse function
    a function obtained by expressing the dependent variable of one function as the independent variable of another; f and g are inverse functions if f(x)=y and g(y)=x
  19. isosceles
    (of a triangle) having two sides of equal length
  20. isosceles triangle
    a triangle with two equal sides
  21. midline
    the median plane of the body (or some part of the body)
  22. minute
    a unit of angular distance equal to a 60th of a degree
  23. period
    the interval to complete one cycle of a repeating phenomenon
  24. periodicity
    the quality of recurring at regular intervals
  25. pi
    the ratio of the circumference to the diameter of a circle
  26. quadrant
    any of the four areas into which a plane is divided
  27. radian
    the unit of plane angle adopted under the Systeme International d'Unites; equal to the angle at the center of a circle subtended by an arc equal in length to the radius (approximately 57.295 degrees)
  28. range
    the set of values that is the output of a function
  29. ray
    (mathematics) a straight line extending from a point
  30. right triangle
    a triangle with one right angle
  31. secant
    ratio of the hypotenuse to the adjacent side of a right-angled triangle
  32. sector
    a plane figure bounded by two radii and the arc of a circle
  33. sine
    ratio of the length of the side opposite the given angle to the length of the hypotenuse of a right-angled triangle
  34. sine wave
    a wave whose waveform resembles a sine curve
  35. sinusoidal
    having a succession of waves or curves
  36. symmetry
    exact reflection of form on opposite sides of a line
  37. tangent
    ratio of the opposite and adjacent sides of a right triangle
  38. trigonometric function
    function of an angle expressed as a ratio of the length of the sides of right-angled triangle containing the angle
Created on Wed Feb 08 13:08:40 EST 2017 (updated Wed Mar 29 15:56:33 EDT 2017)

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