Use the Law of Sines

What is the measure of angle A?

• 50 degrees

• 60 degrees

• 78 degrees

• 74 degrees

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Find c

• 10

• 8

• 6.1

• 4.9

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

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

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Find BC.

• A

• B

• C

• D

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Find b

• 12

• 10

• 23

• 14

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

In triangle ABC m<A = 42, a = 10, b = 13.  Find c.

• c = 0.8699

• c = 60.4

• c = 13.0

• cannot be determined because the triangle does not exist

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Which equation shows how you would use the law of sines to find angle B?

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Find AC to the nearest tenth.

• 33.4

• 35

• 31.9

• 30

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Find XZ to the nearest whole number.

• 48

• 45

• 46

• 43

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Find HP to the nearest tenth.

• 29.3

• 23.2

• 24.1

• 27.5

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11