Law of Sines, Cosines, and Area of Triangles

Which formula would you use?

• Law of Sines

• Law of Cosines

• Herons

• A=.5acsinB

What is the area of this triangle?

• 14.494 meters squared

• 108.184 meters squared

• 54.092 meters squared

• 54.35 meters squared

If the sides of a triangle are 8, 8, and 8, what is the area?

• 8

• 15.58

• 27.71

• 62.91

If the sides of a triangle are 3, 4, and 5, what is the area?

• 6

• 6.28

• 12

• 3.14159

Find the area to the nearest tenth

• A

• B

• C

• D

Find the area:

• 104.5 units²

• 120 units²

• 80.5 units²

• 2400 units²

What is this Triangle's area?

• 8.0

• 17.9

• 80.0

• 8.97

What is the length of side x?

• 130 cm

• 112 cm

• 150 cm

• 105 cm

Find the measure of ∠A

• 18

• 28

• 25

• 24

How many triangles can you make if A=53, b=6, and a=4?

• 0

• 1

• 2

• Infinitely many