# PROBLEM SOLVING 8-5 LAW OF SINES AND LAW OF COSINES

Use this diagram for Exercises Part I Use a calculator to find each trigonometric ratio. Name the leg opposite X. Triangles Review Can the following side lengths be the side lengths of a triangle? Find the square root of both sides. To the nearest degree, what is the angle of depression to the fire from tower B? Example 4 Continued Law of Sines Substitute the given values. About project SlidePlayer Terms of Service. Feedback Privacy Policy Feedback. Round to the nearest hundredth. Using the Law of Sines Find the measure. Auth with social network:

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If you know two side lengths and the included angle measure or if you know all three side lengths, you cannot use the Law of Sines. What is the Law of Sine? Auth with social network: Round lengths to the nearest tenth and angle measures to the nearest degree. Example 3a Find the measure. NP Law of Sines Substitute the given values.

Use the Law of Sines to solve triangles and problems. Example 4 Continued Law of Sines Substitute the given values.

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# Practice B Law of Sines and Law of Cosines

Example probblem Find the measure. Example 4 Continued Step 1 Find the length of the cable. Example 3b Continued Find the measure. How long would this cable be, and what angle would it make with the ground? Instead, you can apply the Law of Cosines. Find the square root of both sides. Trigonometric Ratios Example 1: Sailing Application A sailing club sinse planned a triangular racecourse, as shown in the diagram. Example 3c Find the measure. To use this website, you must agree to our Privacy Policyincluding cookie policy.

Chapter sooving Trigonometry- Part 3. Example 1 Use a calculator to find each trigonometric ratio. To the nearest degree, what is the angle of depression to the fire from tower B? How long is the leg of the race along BC? Multiply both sides by 6. Using the Law of Sines Find the measure. Lww a problem has multiple steps, store the calculated answers to each part in your calculator. Solving right triangles What you need to solve for missing sides and angles of a right triangle: Round lengths to the nearest tenth and angle measures to the nearest degree.

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We think you have liked this presentation. Now find the Dosines of a Triangle. Example 4 What if…? Multiply both sides by Registration Forgot your password? Part I Use a calculator to find each trigonometric ratio.

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