Laws of Sine and Cosine

Find the missing angle θ

• 27.9^o

• 29.2^o

• 26.8^o

• 45^o

Find the area of the triangle

• 72.3cm²

• 84.4cm²

• 77.9cm²

• 78cm²

Which Law would you use?

• Law of Sines

• Law of Cosines

• Law of the Jungle

• Law of Gravity

Which Law would you use?

• Law of Sines

• Law of Cosines

• Law of the Jungle

• Law of Gravity

Which Law would you use?

• Law of Sines

• Law of Cosines

• Law of the Jungle

• Law of Gravity

What would be used to find the distance across the lake?

• Quadratic Formula

• Law of Cosines

• Law of Sines

• Trigonometric Ratios

What would be used to find the distance from the Ranger's Tower to the fire?

• Quadratic Formula

• Law of Cosines

• Law of Sines

• Trigonometric Ratios

What is the measure of angle A?

• 50 degrees

• 60 degrees

• 78 degrees

• 74 degrees

Amanda and Jamie are standing 25 feet apart and spot a bird in the sky between them.  The angle of elevation from Amanda to the bird is 55, and from Jamie to the bird is 63.  How far away is the bird from Amanda?

*Type your answer to the nearest TENTH

*Don't forget your UNITS!

In triangle ABC, a = 3, b = 5, c = 7.  What is the measure of the largest angle?

• 22

• 38

• 60

• 120