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

2. The Trigonometric Functions
SINE
COSINE
TANGENT

3. Prounounced “co-sign”
Pronounced “sign”
SINE
COSINE
Prounounced “co-sign”
TANGENT
Prounounced “tan-gent”
Watch & Take Notes
Greek Letter q
Prounounced “theta”
Represents an unknown angle

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

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

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

7. SOHCAHTOA
Sine Ө = 10 8 6

8. Watch & Take Notes

9. X = ft

10. 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 ( )

11. 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