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Chapter 8.3: Trigonometric Ratios

Chapter 8.3: Trigonometric Ratios. Introduction. Trigonometry is a huge branch of Mathematics. In Geometry, we touch on a small portion. Called the “Trigonometric Functions”. They are three formulas that can be used to find the side lengths of right triangles. They’re called:

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Chapter 8.3: Trigonometric Ratios

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  1. Chapter 8.3: Trigonometric Ratios

  2. Introduction • Trigonometry is a huge branch of Mathematics. In Geometry, we touch on a small portion. Called the “Trigonometric Functions”. They are three formulas that can be used to find the side lengths of right triangles. They’re called: • Sine, Cosine, and Tangent

  3. Sin , Cos , Tan properties • SIN = length of the side opposite an angle length of the hypotenuse • COS = length of the adjacent side to an angle length of the hypotenuse • TAN = length of the side opposite and angle length of the side adjacent to an angle represent an Angle measure

  4. Abbreviation • Soh-Cah-Toa is a way to help you memorize the trig. Formulas. • SOH Sin = opp hyp • CAH Cos = adj hyp • TOA Tan = opp adj

  5. Defining Adjacent and Opposite • Name the line segment: • Adjacent to Angle A= • Opposite to Angle A= • Adjacent to Angle C= • Opposite to Angle C= C A B

  6. How to read the Trig Table Sin 34= Cos 86= Tan 57=

  7. Classwork/Homework • Pgs 434-435 #1-22 (potentially less) • Pgs 441-442 #2-28e (potentially less)

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