10.4(c) Notes: Finding Side Lengths

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Presentation transcript:

10.4(c) Notes: Finding Side Lengths Date: 10.4(c) Notes: Finding Side Lengths Lesson Objective: Apply trig ratios to find side lengths. CCSS: G.SRT.8 You will need: scientific calculator Real-World App: How high did Yoda jump? Lesson 2

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

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

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

Lesson 2: Problem Solving App. A. Yoda uses the Force to make a vertical jump in the air. A Jedi trainee walks 15 m from Yoda and looks up. The angle of elevation from the trainee is 58°. How high did Yoda jump in the air?

Lesson 2: Problem Solving App. B. What is slant distance between Yoda and the trainee?

Lesson 3: 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.

Lesson 3: Problem Solving App. To the nearest hundredth of a foot, what is the horizontal distance covered by the ramp? Find BC. 1.2’ 4.8°

Lesson 3: Problem Solving App. To the nearest hundredth of a foot, what is the length of the ramp? Find AC. 1.2’ 4.8°