Law of Sines and Law of Cosines Review

What is the area of this triangle?

• 14.494 meters squared

• 108.184 meters squared

• 54.092 meters squared

• 54.35 meters squared

Which area formula works for this triangle?

• ½(5)(7)cos(49⁰)

• (5)(7)sin(49⁰)

• ½(5)(7)sin(49⁰)

• all of these

What is the length of side x?

• 130 cm

• 112 cm

• 150 cm

• 105 cm

Find angle A

• 53.6

• 13.3

• 113.1

Which Law would you use? (a)  

• Law of Sines

• Law of Cosines

• Law of the Jungle

• Law of Gravity

Find AB

• 10

• 8

• 6.1

• 4.9

Find m<B

• A

• B

• C

• D

How many triangles can you make if m∠A = 84, a = 18 and b = 19

• 0

• 1

• 2

• Infinitely Many

How many triangles can you make if m∠A=53, b=6, and a=5?

• 0

• 1

• 2

• Infinitely many

What is the length of side x?

• 6.57 cm

• 7 cm

• 7.44 cm

• 26.33 cm