Reference Angles

What is the reference angle for 125°?

• 235°

• 125°

• 75°

• 55°

Tags

CCSS.HSF.TF.A.3

What is the reference angle for -30°?

• 150°

• 30°

• 80°

• 60°

Tags

CCSS.HSF.TF.A.2

CCSS.HSF.TF.A.3

CCSS.HSF.TF.C.8

What is the reference angle for -310⁰?

• 50⁰

• -50⁰

• 20⁰

• 40⁰

Tags

CCSS.HSF.TF.A.2

CCSS.HSF.TF.A.4

CCSS.HSF.TF.C.8

What is the reference angle?

• 163

• 73

• 27

• 107

Tags

CCSS.HSF.TF.A.1

CCSS.HSF.TF.A.2

CCSS.HSF.TF.A.3

What is the reference angle for 2pi/3

• pi/4
• 7pi/6
• 4pi/3
• pi/3

Tags

CCSS.HSF.TF.A.1

CCSS.HSF.TF.A.2

Which of the following is a correct representation of the reference angle of  $\theta=210\degree$  

• 
• 
• 
• 

Tags

CCSS.HSF.TF.A.3

Which of the following is a correct representation of the reference angle of  $\theta=-150\degree$  

• 
• 
• 
• 

Tags

CCSS.HSF.TF.A.2

 $\tan\ 300\degree$  = ______

•  $\frac{1}{\sqrt{3}}\ or\ \frac{\sqrt{3}}{3}$  

•  $-\ \frac{1}{\sqrt{3}}\ or\ \ -\frac{\sqrt{3}}{3}$  

•  $\sqrt{3}$  

•  $-\sqrt{3}$  

Tags

CCSS.HSF.TF.A.2

If  $\sin\theta\ =\frac{3}{5}$  and  $\frac{\pi}{2}\le\theta\le\frac{3\pi}{2}$ , find  $\cos\theta$  

•  $\frac{4}{5}$  

•  $-\frac{4}{5}$  

•  $\frac{3}{4}$  

•  $-\frac{3}{4}$  

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

 $\sin225\degree$  =_______

•   $\frac{1}{2}$  
  

•  $-\frac{1}{2}$  

•  $\frac{1}{\sqrt{2}}$  

•  $-\frac{1}{\sqrt{2}}$  

Tags

CCSS.HSG.SRT.C.7