Intro to the Unit Circle

• cosθ

• OP, the radius length

• sinθ

• 1

Tags

CCSS.HSF.TF.A.2

sin 0

• 0

• 1

• -1

• und

Tags

CCSS.HSF.TF.A.2

cos 0

• 0

• -1

• 1

• und

Tags

CCSS.HSF.TF.A.2

What is a complete circle in radians?

• π

• 2π

• 1/2 π

• 1

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

Which coordinate relates to the cosine of an angle?

• x-coordinate

• y-coordinate

• neither

Tags

CCSS.HSF.TF.A.2

How many degrees is ^π/₄ radians?

• 30°

• 45°

• 60°

• 90°

Tags

CCSS.HSF.TF.A.1

How many degrees is ^π/₂ radians?

• 30°

• 45°

• 60°

• 90°

Tags

CCSS.HSF.TF.A.1

What is half a circle in radians?

• π/4

• π

• 2π

• π/2

Tags

CCSS.HSF.TF.A.1

What is the radius of the unit circle?

• 0

• 1

• 1/2

• √2/2

Tags

CCSS.HSF.TF.A.2

Convert π radians to degrees.

• 90⁰

• 180⁰

• 360⁰

• 60⁰

Tags

CCSS.HSF.TF.A.1