Law of Cosines and Law of Sines Sides

In triangle ABC A = 42°, a = 10, b = 13. Find all possible values for side c. This problem has several steps.

• c = 77.56 and c=18.44

• c = 77.56

• c = 14.59 and c=4.73

• c = 14.59

Use Law of Cosines to find angle T

• 62.2°

• 53.1°

• 59.5°

• 64.7°

If three sides of a triangle are given, the Law of ____ is used to solve the triangle.

• Cosines

• Sines

• Tangent

• Cosecents

Find XZ

• 16.004 meters

• 544.165 meters

• 34.7 meters

• 1204.165 meters

Find QR

• 34.7 km

• 2.2 km

• 13.74

• 31.1 km

To approximate the length of a marsh, a surveyor walks 425 meters from point A to point B. Then the surveyor turns 65º and walks 300 meters to point C. Approximate the length AC of the marsh.

• 250

• 615

• :)

• Not me

Find BC

• A

• B

• C

• D

Find m<C

• A

• B

• C

• D

8.Solve for x

• 3.85

• 4.25

• 3.35

• 5.65

Find the measure of ∠A

• 18

• 28

• 25

• 24