Law of Sines and Cosines

​Law of Sines

​Law of Cosines

This week is National Teacher Appreciation Week!

Multiple Select

What do we need to know in order to apply the LAW of SINES. Choose TWO

• Two angles and a side.

• Two sides and non included angle

• SOCAHTOA

• All three sides

Multiple Choice

What is the longest side of a triangle?

• Right

• Side

• Base

• Hypotenuse

Multiple Choice

Which one of these represents the SIN LAW. Choose 2

• $$\frac{Sin\ A}{a}=\frac{Sin\ B}{b}=\frac{Sin\ C}{c}$$

• $$y=\sqrt[]{a^2}+b^2+\ c\sqrt[]{c}$$

• $$\frac{b}{Sinb}=\frac{c}{Sin\ C}$$

• $$y\ =a^2+b^2+c^2$$

Multiple Choice

Find AB

• 10.03

• 8.04

• 6.10

• 4.93

Multiple Select

What do we need to know about the Law of COSINE Rule? Choose 2

• No sides no angles

• All three sides

• Two sides and an included angle

• One side and one angle

Multiple Select

What is one of the COSINE rules?

• $$c^2=a^2+b^2\left(abCosC\right)$$

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

• $$a^2+b^2=c^2$$

• $$IDK$$