9.2 Sine and Cosine Chapter 9 Right Triangle Trigonometry
TANGENT Tangent <C = length of opposite leg length of adjacent leg tan C = opp adj tan C = 3 4 C 5 4 3
SINE Sine <A = length of opposite leg length of hypotenuse sin A = opp hyp sin A = A 11
COSINE Cosine B = length of adjacent leg length of hypotenuse cos B = adj hyp cos B = 4 5 B 5 4
“SOH-CAH-TOA” SOH: Sin = opp hyp CAH: Cos = adj hyp TOA: Tan = opp adj A B C 3 4 5
“SOH-CAH-TOA” A B C Sin A = Cos A= Tan A= Sin C= Cos C= Tan C=
Your turn… m 7 33 x a y z
Your turn… 16 y z “SOH-CAH-TOA”
INVERSE SIN, COS, TAN SIN -1 opp = x hyp COS -1 adj = x hyp TAN -1 opp = x adj *You use the inverse of the function to solve for angle measure.
Try These… x w 4 15 v 16 y 18 z
Practice Pg , 22-24