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

What is the distance between the two boats? Add this document to saved. Round the length to the nearest tenth and the angle measure to the nearest degree. 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. Upload document Create flashcards. 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.

Teacher Responses, Hints, and Questions. An observer in a lighthouse is 69 ft above the water. Give an opener that maybe relates the lesson to a real life experience or a previous lesson. So when you are given the angle, the side opposite from that angle is the variable by itself on the one side of the equation. Upload document Create flashcards. Round lengths to the nearest tenth and angle measures to the nearest degree.

A pilot flying at an altitude of 12, feet sights two airports directly in front of him. 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. A plane is flying at an altitude of 14, ft. Round lengths to the nearest tenth and angle measures to the nearest degree. Do I need to memorize when each formula needs to be used?

He sees two boats in the water directly in front of him. The angle of depression to one airport is 78 degrees, and the angle of depression to the second airport is 19 degrees. Add this document to collection s. Cosunes long would this cable be, and what angle would it make with the ground?

The Seattle Space Needle casts a meter shadow.

So when you are given the angle, the side opposite from that angle is the variable by itself on cosjnes one side of the equation. How are we supposed to memorize all of those formulas? Have students get out their note paper pink notes in order to take notes. What is the distance between the two airports?

## Solving Triangles – using Law of Sine and Law of Cosine

Draw a picture and solve this problem: Have overhead ready with notes transparency. You can use the Law of Sines to solve a triangle if you are given: Round to the nearest meter.

Honors Geometry Exam Practice Bank. 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.

# Laws of sines and cosines review (article) | Khan Academy

Add this document to saved. Round to the nearest hundredth. Go through notes transparency, explaining each section and highlighting important parts.

To be able to solve non-right triangle problems using the Law of Sines or the Law of Cosines. Use either the Law of Cosines or the Law of Sines to solve for the side or angle. Suggest us how to improve StudyLib For complaints, use another form.

Really you only need to pick one formula, you just need to know where the values go.

Round to the nearest tenth and show your work. You can add this document to your study collection s Sign in Available only to authorized users. For complaints, use another form. Round the length to the nearest tenth and the angle measure to the nearest degree.

An observer in a lighthouse is 69 ft above the water. Upload document Create flashcards.

Find all three angle measures:. 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?