The Unit Circle

What is cos 60°?

• $\frac{1}{2}$
  

• $\frac{\sqrt{3}}{2}$
  

• $\frac{\sqrt{2}}{2}$
  

• 1

What is sin 45°?

• 1

• $\frac{\sqrt{3}}{2}$

• $\frac{1}{2}$
  

• $\frac{\sqrt{2}}{2}$
  

What is cos 90°?

• $\frac{1}{2}$

• undefined

• 1

• 0

What is sin 30°?

• $\frac{\sqrt{3}}{2}$

• 1

• $\frac{1}{2}$
  

• $\frac{\sqrt{2}}{2}$
  

What is tan 45°?

• 1

• $\frac{\sqrt{2}}{2}$

• $\frac{\sqrt{3}}{2}$
  

• $\frac{1}{2}$

What is tan 90°?

• 1

• undefined

• 0

• $\frac{1}{2}$

What is tan 60°?

• 1

• $\frac{1}{2}$

• $\sqrt{3}$
  

• $\frac{\sqrt{3}}{3}$
  

What is sin 60°?

• $\frac{\sqrt{2}}{2}$

• $\frac{1}{2}$
  

• $\frac{\sqrt{3}}{2}$
  

• 1

What is cos 30°?

• $\frac{\sqrt{3}}{2}$

• $\frac{1}{2}$
  

• $\frac{\sqrt{2}}{2}$
  

• 1

What is sin 90°?

• 1

• 0

• undefined

• $\frac{1}{2}$