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

Thinking about the Students consider prior knowledge: Go through the guided practice on page Use either the Law of Cosines or the Law of Sines to solve for the side or angle. He sees two boats in the water directly in front of him. Honors Geometry Exam Practice Bank. Do I need to memorize when each formula needs to be used? It should be somewhat obvious when a formula is going to be used. Ask students to solve for the remaining side and hand the answer to you as an exit slip. This should be a review of previous learning or aligned to the current learning. Use either the Law of Cosines or the Law of Sines to solve for the side or angle. Go through notes transparency, explaining each section and highlighting important parts. Classify each angle as an angle of elevation or an angle of depression:

What is the distance between the two boats? The angle of depression to one airport is 78 degrees, sinws the angle of depression to the second airport is 19 degrees.

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Use either the Law of Cosines or the Law of Sines to solve for the side or angle. The other two variables can be switched around. You can add this document to your saved list Sign in Available only to authorized users. For complaints, use another form. Another engineer suggested using a cable attached from the top of the tower to a point 31 m from the base. How long would oaw cable be, and what angle would it make with the ground?

Round lengths to the nearest tenth and angle measures to the nearest degree.

# Law of Sines and Law of Cosines calculator

You can use the Law of Sines to solve a triangle if you are given: Oc the angle of elevation from the tip of the shadow to the top of the Space Needle is 70 degrees, how tall is the Space Needle? Suggest us how to improve StudyLib For complaints, use another form.

Right Triangles and Trigonometry. We have learned how to solve a right triangle for all of the unknown measures using our trigonometric ratios and the inverses of our trigonometric ratios. How long is the leg of the race along BC? If there are any students that get the wrong answer, make sure you explain what the right answer poblem and why. Thinking about the Students consider prior knowledge: You can add this document to your study collection s Sign in Available only to authorized users. How are we supposed to memorize all of those formulas? Honors Geometry Exam Practice Bank.

What is the distance between the two airports? Law of Sines, Law of Cosines. Go through the guided practice on page He sees two boats in the water directly in front of him. A plane is flying at an altitude of 14, ft.

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## Law of Cosines Calculator

Round to the nearest meter. Really you only need to pick one formula, you just need to know where the values go. Do I need to memorize when each formula needs to be used? Process Standards addressed in the lesson: Classify each angle as an angle of elevation or an angle of depression: An observer in a lighthouse is 69 ft above the water.

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To be able to solve non-right triangle problems sooving the Law of Sines or the Law of Cosines. Add to collection s Add to saved. Ask students to solve for the remaining side and hand the answer to you as an exit slip.