Trigonometric Ratios

Chap 8b Trigonometric Ratios RECAP Lesson

RECAP!!!

• Angle of Perception can be denoted as a measurement in degree by " theta, θ"

• Hypotenuse Side- is ALWAYS across from your right angle

• Opposite Side- is ALWAYS Opposite from your angle of perception

• Adjacent Side- will ALWAYS be the side between your angle of perception and your right angle.

Multiple Choice

What Trigonometric ratio is used to find x

• $$Sin\left(21\right)=\frac{x}{9}$$
  

• 
  

  $$Cos\left(21\right)=\frac{x}{9}$$

• $$\theta=Sin^{-1}\left(\frac{x}{9}\right)$$
  

• $$\theta=Tan^{-1}\left(\frac{9}{x}\right)$$
  

Multiple Choice

Solve for x

• 80.3

• 8.40

• 20.75

• 2.30

Multiple Choice

What trigonometric equation is used to find x

• $$x=97Tan\left(75\right)$$

• $$Cos75=\frac{x}{97}$$

• $$x=\left(\frac{97}{Tan\left(75\right)}\right)$$

• $$Sin75=\frac{97}{x}$$

Multiple Choice

Solve for x

• 362

• 81

• 2.30

• 65.20

Multiple Choice

What trigonometric ratio is used to solve for x?

• $$Sin\left(x\right)=\frac{6}{7}$$
  

• $$\theta=COS^{-1}\left(\frac{\text{6}}{\text{7}}\right)$$

• $$Tan\left(x\right)=\frac{6}{7}$$

• $$\theta=Tan^{-1}\left(\frac{6}{7}\right)$$
  

Multiple Choice

Solve for x

• 28.5

• 27.6

• 52.2

• 31

Multiple Choice

What trigonometric ratio is used to solve for x?

• 
  

  $$\theta=SIN^{-1}\left(\frac{39}{31}\right)$$

• $$\theta=COS^{-1}\left(\frac{31}{39}\right)$$
  

• $$\theta=TAN^{-1}\left(\frac{31}{39}\right)$$
  

• $$Sin\left(x\right)=\frac{31}{39}$$

Multiple Choice

solve for x

• 28

• 64.35

• 52.64

• 97