Soh Cah Toa Review Ms. J. Blackwell, nbct Adapted & Revised from – Emily Freeman – McEachern High School Powder Springs, GA

The Trigonometric Functions SINE COSINE TANGENT

Prounounced “co-sign” Pronounced “sign” SINE COSINE Prounounced “co-sign” TANGENT Prounounced “tan-gent” Watch & Take Notes https://safeshare.tv/x/ss5989b1009ad0a Greek Letter q Prounounced “theta” Represents an unknown angle

Ways to Remember Song https://www.youtube.com/watch?v=PIWJo5uK3Fo Watch & Take Notes Ways to Remember Song https://www.youtube.com/watch?v=PIWJo5uK3Fo

Some Old Hippie Caught Another Hippie Trippin’ Over Old Hippie Asphalt

Sin Ө SOHCAHTOA Opp Hyp Cos Ө Adj Hyp Tan Ө Opp Adj Old Hippie

SOHCAHTOA Sine Ө = 10 8 6

Watch & Take Notes http://www.youtube.com/watch?v=4iC-gjKvc7A

X = 267.65 ft

Ex. 2 A surveyor is standing 50 feet from the base of a large tree. The surveyor measures the angle of elevation to the top of the tree as 71.5°. How tall is the tree? tan 71.5° ? tan 71.5° 71.5° y = 50 (tan 71.5°) 50 y = 50 (2.98868)

Ex. 3 A person is 200 yards from a river. Rather than walk directly to the river, the person walks along a straight path to the river’s edge at a 60° angle. How far must the person walk to reach the river’s edge?h cos 60° x (cos 60°) = 200 200 60° x x X = 400 yards