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3.1 Definitions of Trig Ratios
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3.1 Definitions of Trig Ratios

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    3.1 Definitions of Trig Ratios 3.1 Definitions of Trig Ratios Document Transcript

    • 3.1 Definitions of Trig Ratios 1 March 25, 2014 Unit 3. Trigonometry REVIEW: What do you know about triangles?
    • 3.1 Definitions of Trig Ratios 2 March 25, 2014 Definitions of a Right Triangle
    • 3.1 Definitions of Trig Ratios 3 March 25, 2014 Trigonometric Ratios A ratio compares values
    • 3.1 Definitions of Trig Ratios 4 March 25, 2014 These are similar triangles. Therefore we know...
    • 3.1 Definitions of Trig Ratios 5 March 25, 2014 Definition of Trig Ratios Name Ratio Notation
    • 3.1 Definitions of Trig Ratios 6 March 25, 2014 Find... a.) tan40º b.) sin55º c.) cos70º d.) tan30º e.) sin25º What do these mean...?
    • 3.1 Definitions of Trig Ratios 7 March 25, 2014 Example 1. Find all the trig ratios of ∠A (tan∠A, sin∠A, cos∠A) A B C3 4 5
    • 3.1 Definitions of Trig Ratios 8 March 25, 2014 You try! Find all the trig ratios of ∠Z (tan∠Z, sin∠Z, cos∠Z)
    • 3.1 Definitions of Trig Ratios 9 March 25, 2014