Quiz #1: Trigonometry and the Unit Circle

Using the unit circle. In which quadrant on the unit circle is sine positive? 

• A. I and II
• B. II and III
• C. III and IV
• D. I and III

Tags

CCSS.HSF.TF.A.2

If cos x = 1/2, find all possible values of x where 0<x<360. 

• A. 60^o and 300^o
• B. 30^o and 150^o
• C. 30^o and 330^o
• D. 60^o and 120^o

Tags

CCSS.HSF.TF.B.7

What is the exact value of sin(120^o)? 

• A. √2/2
• B. -√2/2
• C. -√3/2
• D. √3/2

Tags

CCSS.HSF.TF.A.4

 $\frac{5\pi}{6}\$  radians is equal to how many degrees?

•  $240\degree$  

•  $150\degree$  

•  $420\degree$  

•  $330\degree$  

Tags

CCSS.HSF.TF.A.1

Identify the point on the unit circle corresponding to an angle of  $150\degree$  in standard position.

•  $\left(-\sqrt{3},\ -\frac{\sqrt{3}}{2}\right)$  

•  $\left(\frac{-\sqrt{3}}{2},\frac{1}{2}\right)$  

•  $\left(\frac{1}{2},\frac{-\sqrt{3}}{2}\right)$  

•  $\left(\frac{1}{2},-\sqrt{3}\right)$  

Which graph represents an angle in standard position with a measure of  $\frac{\pi}{5}$  ?

• 
• 
• 
• 

Tags

CCSS.HSF.TF.A.2

CCSS.HSF.TF.A.1

CCSS.HSG.C.B.5

cot π/2

• undefined
• 0
• 1
• 1/2

Tags

CCSS.HSF.TF.A.2

sec 3π/2

• 0
• undefined
• 1
• -1

Tags

CCSS.HSF.TF.A.2

CCSS.HSF.TF.A.1

CCSS.HSF.TF.A.3

CCSS.HSF.TF.C.8

Find the reference angle for an angle measuring θ = -2π / 3

• π / 3
• 2π /3
• -π /3
• 60⁰

Tags

CCSS.HSF.TF.B.7

What is cos 60°?

• ½
• ^√3/₂
• ^√2/₂
• 1

Tags

CCSS.HSF.TF.A.2