Unit Circle

At θ = 30°, what is the equivalent angle measure in radians?

• π/2
• π/3
• π/4
• π/6

Tags

CCSS.HSF.TF.A.1

What is the angle measure, in degrees, at the red marking on the unit circle?

• 30°
• 45°
• 60°
• 90°

Tags

CCSS.HSF.TF.A.2

What is the value of θ, theta, in degrees on the unit circle?

• 30°
• 45°
• 60°
• 90°

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

• y/r
• x/r
• r/y
• y/x

Tags

CCSS.HSF.TF.A.2

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

• y/r
• x/r
• r/y
• y/x

Tags

CCSS.HSF.TF.A.2

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 csc?

• y/r
• x/r
• r/y
• y/x

Tags

CCSS.HSF.TF.A.2

CCSS.HSF.TF.A.3

CCSS.HSF.TF.C.8

CCSS.HSG.SRT.C.6

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

• y/r
• x/r
• r/y
• r/x

Tags

CCSS.HSF.TF.A.2

CCSS.HSF.TF.A.3

CCSS.HSG.SRT.C.6

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

• y/r
• x/y
• r/y
• y/x

Tags

CCSS.HSF.TF.A.2

CCSS.HSF.TF.A.3

CCSS.HSF.TF.C.8

CCSS.HSF.TF.A.4

What is the exact value of sin π/4

• √2∕2
• 1/2
• √3/2
• 0