Unformatted text preview: 4.4 Trig Functions of Any Angle
Wednesday, August 24, 2011
6:38 AM Agenda:
1. Classwork
2. Lesson: 4.4 Trig Functions of Any Angle
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Lesson: 4.4 Trig Functions of Any Angle
Goal: Find the trig values and reference angle for any angle.
DOD
Def'n of Trig Functions of any angle
Let θ be an angle in standard position with
and
. a point on the terminal side of θ Def'n of Reference Angle
Let θ be an angle in standard position. Its reference angle is the acute angle θ' (theta
prime) formed by the terminal side of θ and the horizontal axis. (Reference angles will help us to find the values of special trig functions!)
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Ch_4 Page 1 ______________________________________
Examples
Let
be a point on the terminal side Given
and
of θ. Find the value of all 6 trig functions.
and
.
What quadrant are we in?
What quadrant are we in? Find the reference angle θ' Ch_4 Page 2 , find ...
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This note was uploaded on 11/19/2011 for the course MATH 180 taught by Professor Byrns during the Spring '11 term at Montgomery College.
 Spring '11
 byrns
 Math

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