Circle Trigonometric Ratios

Based on the unit circle, what is the value of cos?

• y/r
• x/r
• r/y
• y/x

Based on the unit circle, what is the value of tan?

• y/r
• x/r
• r/y
• y/x

Based on the unit circle, what is the value of sin?

• y/r
• x/r
• r/y
• y/x

cosθ is positive in

• the 1st and 2nd quadrants
• the 1st and 3rd quadrants
• the 1st and 4th quadrants
• the 2nd and 3rd quadrants

sinθ is positive in

• the 1st and 2nd quadrants
• the 1st and 3rd quadrants
• the 1st and 4th quadrants
• the 2nd and 3rd quadrants

Positive angles are measured in which direction from standard position?

• Clockwise
• Counterclockwise

Tags

CCSS.HSF.TF.A.2

Negative angles are measured in which direction from standard position?

• Clockwise
• Counterclockwise

 $\csc\left(\theta\right)=......$  

•  $\frac{1}{\sin\left(\theta\right)}$  

•  $\frac{1}{\cos\left(\theta\right)}$  

•  $\frac{1}{\tan\left(\theta\right)}$  

•  $\frac{1}{\cot\left(\theta\right)}$  

 $\sec\left(\theta\right)=......$  

•  $\frac{1}{\sin\left(\theta\right)}$  

•  $\frac{1}{\cos\left(\theta\right)}$  

•  $\frac{1}{\tan\left(\theta\right)}$  

•  $\frac{1}{\cot\left(\theta\right)}$  

 $\cot\left(\theta\right)=......$  

•  $\frac{1}{\sin\left(\theta\right)}$  

•  $\frac{1}{\cos\left(\theta\right)}$  

•  $\frac{1}{\tan\left(\theta\right)}$  

•  $\frac{1}{\cot\left(\theta\right)}$