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Day 02
Lecture 01
for 1/11/2011
Algebra & Angles
What is Trigonometry?
Trigonometry literally means:
________________ of _______________.
And the word Triangle literally means:
________________ of _______________.
Before attacking these terms we will review some PreCalculus
concepts from the 1140 course.
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Review Part I: Arithmetic & Geometry
A
______________ line
in the plane is a plot of points which
extends left and right infinitely but never rises nor falls.
Similarly, a
_____________ line
in the plane is a plot of points
which rises and falls infinitely but never extends left nor right.
Suppose, two points are fixed on either of these kinds of lines
and the distance between the two points is defined as
______, a
unit step length
.
Then one of the points is labeled _______ and the other is
labeled
________, and further…
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Review Part II: Real Numbers
Every point on the line is assigned a
coordinate
, a real number
describing the _____________ and ___________ that point is
from the position labeled 0.
The line become the
Real Number Line
Recall, the
distance
between any two points on a number line is
the
absolute value
of the difference in their coordinates:
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 Spring '11
 Gentimis
 Calculus, PreCalculus, Algebra, Trigonometry, Angles, Euclidean geometry

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