Law of Sines, Law of Cosines

Identify the Law of Sines

• Sin²x + Cos²x =1

• Sin(A)/a = Sin(B)/b = Sin(C)/c

• Sin(A)Sin(B)Sin(C) = 1

• Soh-Cah-Toa

Which Law would you use?

• Law of Sines

• Law of Cosines

Which Law would you use?

• Law of Sines

• Law of Cosines

Which Law would you use?

• Law of Sines

• Law of Cosines

What are the possible criteria for Law of Sines?

• SSA, ASA, AAS

• AAS, SSS, ASA

• SAS, SSS, ASA

• SAS, AAS, ASA

What are the possible criteria for the Law of Cosines?

• SSA, SSS

• SSA, ASA

• SSS, SAS

• AAS, ASA

find X

• 52

• 33

• 41

• 29

Find m<A

• A

• B

• C

• D

How many triangles can you make if A=53, b=6, and a=7?

• 0

• 1

• 2

• Infinitely many

Find the length of Side BC.

• 33

• 24

• 12

• 29