IM3_Ch.7 Law of Sines/ Cosines

Which of the following formulas shows the Law of Cosines?

• $c^2=a^2+b^2-4\left(a\right)\left(b\right)\cos\left(A\right)$
  

• $2c=2a-2b-2\left(a\right)\left(b\right)\cos\left(C\right)$
  

• $c^2=a^2+b^2-2\left(a\right)\left(b\right)\cos\left(C\right)$

• $\frac{a}{\cos\left(A\right)}=\frac{b}{\cos\left(B\right)}$
  

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Identify the Law of Sines

(2 CORRECT ANSWERS)

•  $\sin\left(2x\right)+\cos\left(2x\right)=1$  
  

•  $\frac{a}{\sin\left(A\right)}=\frac{b}{\sin\left(B\right)}$  

•  $SOH-CAH-TOA$  
  

•  $\frac{\sin\left(A\right)}{a}=\frac{\sin\left(C\right)}{c}$  
  

Which Law would you use?

• Law of Sines
• Law of Cosines
• Law of the Jungle
• Law of Gravity

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Which Law would you use?

• Law of Sines
• Law of Cosines
• Law of the Jungle
• Law of Gravity

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Which Law would you use?

• Law of Sines
• Law of Cosines
• Law of the Jungle
• Law of Gravity

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Which Law would you use?

• Law of Sines
• Law of Cosines
• Law of the Jungle
• Law of Gravity

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Which Law would you use?

• Law of Sines
• Law of Cosines
• Law of the Jungle
• Law of Gravity

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

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

• Cosines
• Sines
• Tangent
• Cosecents

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

What could be used to solve for side x?

• Law of Sines

• Law of Cosines

• SOH-CAH-TOA

• cannot be solved with given information

4. Name the smallest angle in this triangle.

• ∠A

• ∠B

• ∠C

Tags

CCSS.HSG.CO.C.10