Unit Circle and Trig 2/15/21

Using your unit circle, what is $\csc\left(-\frac{7\pi}{3}\right)$  ?

•  $2$  

•  $-2$  

•  $\frac{2\sqrt{3}}{3}$  

•  $-\frac{2\sqrt{3}}{3}$  

Tags

CCSS.HSF.TF.A.1

CCSS.HSF.TF.A.2

CCSS.HSF.TF.A.3

Using your unit circle, what is $\cot\left(-5\pi\right)$  ?

•  $0$  

•  $1$  

•  $-1$  

• undefined

Tags

CCSS.HSF.TF.A.1

CCSS.HSF.TF.A.2

CCSS.HSF.TF.A.4

Choose all the trigonometric ratios below that have a solutions of $-\frac{1}{2}$  .

•  $\sin\left(330^o\right)$  

•  $\cos\left(120^o\right)$  

•  $\sin\left(-30^o\right)$  

•  $\cos\left(240^o\right)$  

•  $\sin\left(-240^o\right)$  

Tags

CCSS.HSG.SRT.C.7

If $\sin\left(\theta\right)=\frac{\sqrt{3}}{4}$ and  $\cos\left(\theta\right)=-\frac{\sqrt{13}}{4}$ what is tan( $\theta$ )? 

•  $-\frac{4\sqrt{13}}{13}$  

•  $\frac{4\sqrt{3}}{3}$  

•  $-\frac{\sqrt{39}}{3}$  

•  $-\frac{\sqrt{39}}{13}$  

Tags

CCSS.HSG.SRT.C.7

Given that $\sin\left(\theta\right)=-\frac{\sqrt{21}}{5}$ and  $\cos\left(\theta\right)=\frac{2}{5}$ , what is  $\cot\left(\theta\right)$ ? 

•  $-\frac{\sqrt{21}}{2}$  

•  $\frac{\sqrt{21}}{2}$  

•  $-\frac{2\sqrt{21}}{21}$  

•  $\frac{2\sqrt{21}}{21}$  

Tags

CCSS.HSF.TF.C.8

sin (π/2)

• √3/2
• √2/2
• 1/2
• 1

Tags

CCSS.HSF.TF.A.2

cos (π/4)

• √3/2
• √2/2
• 1/2
• 1

Tags

CCSS.HSG.SRT.C.7

cos(π)

• √3/2
• -√2/2
• -1
• 1

Tags

CCSS.HSG.SRT.C.7

cos(5π/3)

• -√2/2
• -1/2
• 1/2
• √3/2

Tags

CCSS.HSF.TF.A.2

tan(3π/4)

• √2/2
• -√2/2
• √3/2
• -1

Tags

CCSS.HSF.TF.A.2