1. Trig Review: PRE-AP Trigonometry Review Remember right triangles? hypotenuse θ Opposite side Adjacent side Triangles with a 90º angle

2. Trig Review: PRE-AP Trigonometry Review Pythagorean Theorem – C is always the hypotenuse Remember: a 2 + b 2 = c 2 Side c θ Side b Side a

3. Trig Review: PRE-AP Trigonometry Review sin θ = opposite / hypotenuse cos θ = adjacent / hypotenuse tan θ = opposite / adjacent hypotenuse θ Opposite side Adjacent side Remember: “SOH-CAH-TOA”

4. Trig Review: PRE-AP Basic Practice: Use your calculator (make sure it is in degree mode) to find: 1) sin40º = ________ 2) cos32º = ________ 3) cos90º = ________ 4) sin90º = ________ 5) tan20º = ________

5. Trig Review: PRE-AP Basic Practice: Find the angle, θ : 1) sinθ = 0.2415 2) cosθ = 0.9018 3) tan θ = 2.3840

6. Trig Review: PRE-AP Let’s apply to a triangle Find side C C 18 m 20º

7. Trig Review: PRE-AP Let’s apply to a triangle Find side B B 35º 10 m

8. Trig Review: PRE-AP Let’s apply to a triangle Find angle a 13 m a 10 m

9. Trig Review: PRE-AP Let’s apply to a triangle Find side c 13 m a 10 m c