Agenda:
1.
Warmup
2.
Lesson: 4.2 Unit Circle
______________________________
Warmup
Sketch the angle in standard position and list the quadrant it lies in.
Determine two
coterminal angles (one positive and one negative).
And convert to degrees, rounded to
the nearest hundredth (
what does hundredth mean?
)
1.
2
(what unit is this angle measure?)
______________________________
Lesson:
4.2 The Unit Circle
Goal:
Use a unit circle to evaluate trigonometric functions
DOD
Unit Circle:
Circle of radius 1, center at origin (
)
Remember whiteboard pens on Monday!
Also, there will be a homework check on Monday.
4.2 The Unit Circle
Thursday, August 18, 2011
3:06 PM
Ch_1 Page 1

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Trigonometric Functions
Let
θ
be a real number and
the point on the unit circle corresponding to
θ
.
i
multiples