Chapter 4.4 Day 3

Multiple Choice

Find the reference angle θ' for $$\theta=\frac{5\pi}{3}$$  .

• $$\frac{\pi}{3}$$  

• $$\frac{\pi}{4}$$  

• $$\frac{\pi}{6}$$  

• $$\frac{2\pi}{3}$$  

Multiple Choice

Find the reference angle θ' for θ=250°.

• 20° 

• 70°

• 110°

• 60°

Multiple Choice

Find the reference angle θ' for $$\theta=\frac{8\pi}{3}$$  .

• $$\frac{\pi}{3}$$  

• $$\frac{\pi}{4}$$  

• $$\frac{\pi}{6}$$  

• $$\frac{7\pi}{3}$$  

Multiple Choice

Find the reference angle θ' for $$\theta=690\degree.$$  

• $$30\degree$$  

• $$45\degree$$  

• $$60\degree$$  

• $$150\degree$$   

Multiple Select

Which trigonometric functions are positive in Quadrant II?

• cosθ

• sinθ

• tanθ

• secθ

• cscθ

Multiple Select

Which trigonometric functions are positive in Quadrant I?

• cosθ

• sinθ

• tanθ

• secθ

• cscθ

Multiple Select

Which trigonometric functions are positive in Quadrant IV?

• cosθ

• sinθ

• tanθ

• secθ

• cscθ

Draw

Use reference angles to find $$\sin\frac{5\pi}{4}$$  .