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TABLE OF CONTENTS 19. TRIGONOMETRIC RATIOS. TRIG RATIOS STD: MM2G2 – DEFINE AND APPLY TRIG RATIOS TO RIGHT TRIANGLES EQ: - What are the 3 trig ratios?

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Presentation on theme: "TABLE OF CONTENTS 19. TRIGONOMETRIC RATIOS. TRIG RATIOS STD: MM2G2 – DEFINE AND APPLY TRIG RATIOS TO RIGHT TRIANGLES EQ: - What are the 3 trig ratios?"— Presentation transcript:

1 TABLE OF CONTENTS 19. TRIGONOMETRIC RATIOS

2 TRIG RATIOS STD: MM2G2 – DEFINE AND APPLY TRIG RATIOS TO RIGHT TRIANGLES EQ: - What are the 3 trig ratios?

3 VOCABULARY Trig ratio- ratio of the lengths of two sides of a right triangle

4 3 BASIC TRIG RATIOS Sine (sin) Cosine (cos) Tangent (tan) Sin  Cos  Tan 

5 JUST REMEMBER CHIEF… SOHCAHTOA inisinisp ppoverppover ypyp osisosis djoverdjover ypyp anisanis p ppoverppover djdj

6 AA sin A= 12/13 =.9231 cos A= 5/13 =.3846 tan A= 12/5 = 2.4 BB sin B= 5/13 =.3846 cos B= 12/13 =.9231 tan B= 5/12 =.4167 EX: FIND SIN, COS, & TAN OF  A &  B. C A B 13 12 5

7 EXAMPLE 30 60 __ 1 2 A B C sin A= ½ or.5 sin 30=.5 Find sin A and sin 30 o.

8 EXAMPLE 45 __ A B C 1 1 sin 45 o =.7071 Find sin B and sin 45 o.

9 ASSIGNMENT ASSIGNMENT PG. 159: #1-3 ALL PG 166: #2-12 EVEN ASSIGNMENT


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