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?

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

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

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

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

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

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

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