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

You can use a calculator to find these values. How many degrees must competitors turn at point C? Law of Sines, Law of Cosines. The other two variables can be switched around. A plane is flying at an altitude of 14, ft. What is the distance between the two airports? Use either the Law of Cosines or the Law of Sines to solve for the side or angle.

If there are any students that get the wrong answer, make sure you explain what the right answer is and why. Draw a non-right triangle with SAS on the board, label one side 3, the next angle 45, and the other side 3. Right Triangles and Trigonometry. Honors Geometry Exam Practice Bank. Ask students to solve for the remaining side and hand the answer to you as an exit slip. Go through the guided practice on page

Go through the guided practice on page Add this document to saved. How many degrees must competitors turn at point C? Suggest us how to improve StudyLib For complaints, use another form.

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. Round to the nearest tenth and show your work. You will notice that if I use.

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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.

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You can use a calculator to find these values. An observer in a lighthouse is 69 ft above the water.

If 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? Have students get out their note paper pink notes in order to take notes. Process Standards addressed in the lesson: He sees two boats in the water directly in front of him.

Anticipated Student Questions and Responses. A plane is flying at an altitude of 14, ft.

Round to the nearest hundredth. Find all three angle measures: Round to the nearest meter. You can start by asking yourself what you are looking for and what you are given. Classify each angle as an angle of elevation or an angle of depression: Really you only need to pick one formula, you just need to know where the values go.

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Give an opener that maybe relates the lesson to a real life experience or a previous lesson. Honors Geometry Exam Practice Bank. Upload document Create flashcards. Draw a non-right triangle with SAS on the board, label one side 3, the next angle 45, and the other side 3.

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How are we supposed to memorize all of those formulas? The angle of depression to one airport is 78 degrees, and the angle of depression to the second airport is 19 degrees. Use either the Law of Cosines or the Law or Sines to solve for the side or angle.