3.5.2: Right Triangle Trig

From ∠C, what side is AB?

• Adjacent
• Hypotenuse
• Opposite

Which trigonometric ratio is correct?

• cosC= adj/hyp
• sinC= adj/hyp
• tanC= adj/hyp
• tanC=adj/opp

Which Trig function do you use?

• Sine
• Cosine
• Tangent

Set up the problem...

• sin X = 41/28
• tan X = 41/28
• cos X = 28/41
• sin X = 28/41

Solve for x. Round to the nearest tenth.

• 103.5
• 4.7
• 55.0
• 23.4

 $\cos\left(\theta\right)=?$  

•  $\frac{3}{5}$  

•  $\frac{4}{5}$  

•  $\frac{3}{4}$  

•  $\frac{4}{3}$  

Susan is flying a kite, which gets caught in the top of a tree.  Use the diagram to estimate the height of the tree. 

• 63 ft
• 65 ft
• 74 ft
• 87 ft