1. 9-1 Tangent Ratio 9-2 Sine and Cosine Ratio Learning Target: I will be able to solve problems using the tangent, sine, and cosine ratios. Goal 1.01

2. Some Old Hippy Caught Another Hippy Tripping On Acid This is a way to remember the three trig ratios. Sine, Cosine, and Tangent. A Leg Opposite A Leg Adjacent to A Hypotenuse

3. Sine Ratio Some Old Hippy A Leg Opposite A Leg Adjacent to A Hypotenuse Sine A = Opposite Hypotenuse _________

4. Examples: Write the ratio for sin M and the sin ratio for L. L M K 7 13 12 sin M = 7/13 = 0.5385 sin L = 12/13 = 0.9231

5. Cosine Ratio Caught Another Hippy A Leg Opposite A Leg Adjacent to A Hypotenuse Cosine A = Adjacent Hypotenuse _________

6. Examples: Write the ratio for cos M and the ratio for cos K. 2 5 13 M LK cos M = 2/13 = 0.1538 cos K= 5/13 = 0.3846

7. Tangent Ratio Tripping on Acid A Leg Opposite A Leg Adjacent to A Hypotenuse Tangent A = Opposite ________ Adjacent

8. Examples: 1. Write the ratio for tan M and the ratio for tan L. M L K 3 4 5 tan M = 4/3 = 1.333 tan L = 3/4 = 0.75