# chapter 13 trig

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1. cosine sine tangent cosecant secant cotangent
the ratios of a right triangles 3 sides
2. solving a right triangle
find all sides and all angle measures
3. angle of elevation
the angle an object moving upward makes
4. angle of depression
the angle an object moving downward creates
5. initial side
the starting point for an angle
6. terminal side
the end line of an angle
7. standard position
an angle in which both sides are positive is in standard position
8. coterminal
two angles in standard position are coterminal
9. sector
a region of a circle bound by two radii
10. center angle
the terminal side of the angle lands on an axis
12. reference angle
always acute, always positive, formed by the terminal side.
13. inverse sine
sin -1
14. inverse cosine
cos-1
15. inverse tangent
tan-1
16. law of sines
how to solve for a triangle that gives you 2 angles and any side, two sides and an angle opposite, three sides, two sides and an included angle.
17. law of cosines
how to solve for a triangle which gives two sides and an angle
18. parametric equations
a pair of equations that expressed x and y in terms of a third variable, t.
19. parameter
t in a parametric equation is the parameter
 Author: chrislchs19 ID: 135084 Card Set: chapter 13 trig Updated: 2012-02-14 02:22:56 Tags: trig Folders: Description: trig Show Answers: