1. Date: 10.4(c) Notes: Finding Side Lengths Lesson Objective: Apply trig ratios to find side lengths. CCSS: You will need: scientific calculator Real-World App: How long is the ramp? Lesson 2

2. Lesson 1: Trig. Ratios To find a leg length of a right triangle using TRIG: 1.Label the unknown leg x. 2.Highlight the angle measure given. 3.Highlight the given side. 4.Determine if you should use SOH, CAH or TOA.

3. Lesson 1: Trig. Ratios Find each length. Round to the nearest hundredth. A.QRB.QP

4. Lesson 1: Trig. Ratios Find each length. Round to the nearest hundredth. C.FDD.DE

5. Lesson 2: Problem Solving App. A contractor is building a wheelchair ramp for a doorway that is 1.2 ft above the ground. To meet ADA guidelines, the ramp will make an angle of 4.8° with the ground.

6. Lesson 2: Problem Solving App. A.To the nearest hun­dredth of a foot, what is the hori­zontal distance covered by the ramp? Find BC. 4.8° 1.2’

7. Lesson 2: Problem Solving App. B.To the nearest hun­dredth of a foot, what is the length of the ramp? Find AC. 4.8° 1.2’