Law of Sines and Cosines and Area

Find angle Z

• 20.15°

• 71.23°

• 51.06°

• 57.71°

In Triangle KHP, h= 9, k=9.4, p= 8. Find the area of each triangle to the nearest tenth.

Use the Law of Cosines to find the value of x.  (Level 1)

• 41.7

• 51.7

• 61.7

• 71.7

To solve the triangle shown, you would start with which formula?

• Law of Cosines

• Law of Sines

• Heron's Formula

• Triangle sum theorem

Choose which law you need to solve the problem (DO NOT SOLVE):

• Law of Sines

• Law of Cosines

• Both

• Neither

What is the length of side x?

• 130 cm

• 112 cm

• 150 cm

• 105 cm

Identify the Law of Sines

• Sin²x + Cos²x =1

• Sin(A)/a = Sin(B)/b = Sin(C)/c

• Sin(A)Sin(B)Sin(C) = 1

• y=Sin(x)

• A

• B

• C

• D

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