Defining and understanding trigonometric ratios

If you are given the hypotenuse and an adjacent side, which trig function should you use?

• sine
• cosine
• tangent
• cotangent

 $\sin90\degree$  = ______

• 0

• 1

• -1

• does not exist

What does SOH stand for

• hypotenuse over opposite
• adjacent over opposite
  opposite over adjacent
• opposite over hypotenuse
• adjacent over adjacent

What is the ratio for Cosine?

• Adj/Hyp

• Opp/Adj

Set up the trigonometric ratio and SIMPLIFY

Which of the following ratios would allow you to solve for the angle indicated by the "?" ?

• $\tan\left(?\right)=\frac{29}{38}$

• $\sin\left(?\right)=\frac{29}{38}$

• $\cos\left(?\right)=\frac{38}{29}$

• $\tan\left(?\right)=\frac{38}{29}$

Set up the trigonometric ratio and SIMPLIFY

Give the ratio Tan X

• $\frac{adj}{opp}$

• $\frac{opp}{adj}$

• $\frac{adj}{hyp}$

• $\frac{opp}{hyp}$

Give the Ratio for COS X

• Adj/Hyp

• Opp/Adj

What is the cosine of angle P?

• p/q
• q/r
• p/r
• r/q