Unit 6 Lesson 1

Multiple Select

Where on the unit circle is sin = 0?

• 0

• $$\frac{\pi}{2}$$  

• $$\pi$$  

• $$\frac{3\pi}{2}$$  

• $$2\pi$$  

Multiple Select

Where on the unit circle is sin = 1 or sin = -1?

• 0

• $$\frac{\pi}{2}$$  

• $$\pi$$  

• $$\frac{3\pi}{2}$$  

• $$2\pi$$  

Multiple Select

Where on the unit circle is cos = 0?

• 0

• $$\frac{\pi}{2}$$  

• $$\pi$$  

• $$\frac{3\pi}{2}$$  

• $$2\pi$$  

Multiple Select

Where on the unit circle is cos = 1 or cos = -1?

• 0

• $$\frac{\pi}{2}$$  

• $$\pi$$  

• $$\frac{3\pi}{2}$$  

• $$2\pi$$  

Multiple Choice

What is the period for $$y=-2\cos\frac{2x}{3}-1$$  ?

• $$\frac{\pi}{3}$$  

• $$3\pi$$  

• $$2\pi$$  

• $$\frac{\pi}{2}$$  

• $$\frac{4\pi}{3}$$