1. Trigonometry
Obj: I can to use trigonometry to find unknown sides and unknown angles in a triangle.
Trigonometry is concerned with the connection between the sides and angles in any right angled triangle.
Angle

2. The sides of a right -angled triangle are given special names:
The hypotenuse, the opposite and the adjacent.
The hypotenuse is the longest side and is always opposite the right angle.
The opposite and adjacent sides refer to another angle, other than the 90o. A

3. The Trigonometric Functions we will be looking at
SINE
COSINE
TANGENT

4. The Trigonometric Functions
SINE
COSINE
TANGENT

5. SINE
Prounounced “sign”

6. Prounounced “co-sign”
COSINE
Prounounced “co-sign”

7. Prounounced “tan-gent”

8. Represents an unknown angle
Greek Letter q
Prounounced “theta”
Represents an unknown angle

9. hypotenuse
hypotenuse
opposite
opposite
adjacent
adjacent

10. We need a way to remember all of these ratios…

11. Some
Old
Hippie
Came A
Hoppin’
Through
Our
Old Hippie
Apartment

12. Sin
SOHCAHTOA
Opp
Hyp
Cos
Adj
Hyp
Tan
Opp
Adj
Old Hippie