Section 4.2 handout ann_1

# Section 4.2 handout ann_1 - Section 4.2 Trigonometric...

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Section 4.2 Trigonometric Functions: The Unit Circle Section 4.2 Trigonometric Functions: The Unit Circle, p. 1

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Section 4.2 Trigonometric Functions: The Unit Circle Section 4.2 Trigonometric Functions: The Unit Circle, p. 2
Section 4.2 Trigonometric Functions: The Unit Circle Section 4.2: Trigonometric Functions: The Unit Circle The Unit Circle : A circle of radius 1 whose center is positioned at the origin of the rectangular coordinate system. The equation of this circle is x 2 + y 2 = 1. 1) Trigonometric Functions of Real Numbers Defined Using the Unit Circle . 2) Find Values of Trigonometric Functions Using the Unit Circle . a. Example 1 :  Use the unit circle and trigonometric definitions to find : Section 4.2 Trigonometric Functions: The Unit Circle, p. 3 sint = y/1 = y cost = x/1 = x tant = y/x csct = 1/y sect = 1/x cott = x/y sint = y = ________ cost = x = ________ tant = y/x = ________ csct = 1/y = ________ sect = 1/x = ________ cott = x/y = ________ Pt ( 30/10, 70/10) x t r =1 y arc length = t t measured in radians x t r =1 y arc length = t Pt ( x , y ) measured in radians

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Section 4.2 Trigonometric Functions:
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## This note was uploaded on 04/07/2008 for the course MTH MTH162 taught by Professor Bundick during the Spring '08 term at VCCS.

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Section 4.2 handout ann_1 - Section 4.2 Trigonometric...

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