Law of Sines and Cosines Review

Which of the following formulas shows the Law of Cosines?

• c² = a² + b² - 4ac + cosA
• c² = a² - b² - 2abcosC
• c² = a² + b² - 2abcosC
• (cos A)/a = (cos B)/b

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Which Law would you use?

• Law of Sines
• Law of Cosines
• Law of the Jungle
• Law of Gravity

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Which Law would you use?

• Law of Sines
• Law of Cosines
• Law of the Jungle
• Law of Gravity

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

What is the measure of angle A?

• 50 degrees
• 60 degrees
• 78 degrees
• 74 degrees

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

What is the length of side x?

• 130 cm
• 112 cm
• 150 cm
• 105 cm

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Based on the given information use law of sines to determine the number of triangles that may exist.
J = 98°, j = 29, p = 6

• 1 Triangle
• 2 Triangles
• No Triangles
• 3 Triangles

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Based on the given information use the law of sines to determine the number of triangles that may exist.
A= 37°, a=8, b=14

• 1 Triangle
• 2 Triangles
• No Triangles
• 3 Triangles

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Find angle A

• 53.6
• 13.3
• 113.1

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Find the area of ABC to the nearest tenth, if necessary. 

• 72.4cm²
• 71.5cm²
• 82.1cm²
• 79.4cm²

Tags

CCSS.HSG.SRT.D.9

What is the area of the triangle?

• No area can be found
• 15.574 meters squared
• 784.621 meters squared
• 62.08 meters squared

Tags

CCSS.6.G.A.1