Law of Cosines

Which of the following problems should have its solution started with the Law of Cosines. Select ALL that apply

• Given: side a, side b, side c

• Given: side b, side c, angle C

• Given: side a, side c, angle B

• Given: side c, angle A, angle B

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

All of the following sets of given information should have their solutions started with the Law of Cosines EXCEPT

• given: side a, side b, side c

• given: side a, side c, angle B

• given: side c, angle A, angle B

• given: side b, side c, angle A

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

When solving a triangle given side a = 13, side b = 16, and side c = 5, which angle should you solve for first?

• Angle A

• Angle B

• Angle C

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

When solving a triangle given side b = 12, side c = 10 and angle A = 43^o, which remaining part will you solve for first?

• Angle B

• Angle C

• Side a

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Given a triangle with side a = 9, side b = 3 and side c = 11, what is the measure of angle C to the nearest degree?

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

In the given triangle, what is the length of side c?

• 5.231

• 6.666

• 7.018

• 6.142

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

In the given triangle, what is the value of angle X to the nearest tenth of a degree?

• 40.8^o

• 78.6^o

• 65.2^o

• 60.6^o

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

In the given triangle, what is the approximate measure of angle B?

• 27.23^o

• 31.77^o

• 74.77^o

• 66.23^o

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11