Understanding Radians

The video tutorial introduces the concept of radians, explaining their relation to Pi and circles. It covers how radians are measured, their conversion to degrees, and their representation on the unit circle. The tutorial aims to demystify radians, making them easier to understand by breaking down their components and showing their practical applications in geometry.

What is the value of pi in terms of diameters around a circle?

• A little more than 3

• Exactly 3

• Exactly 4

• Exactly 2

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CCSS.4.MD.A.1

How many radii fit around half of a circle?

• Exactly 4

• A little more than 3

• Exactly 2

• Exactly 3

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CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

What is a radian?

• The angle that opens up and catches one radius on the outside of a circle

• The distance around a circle

• The diameter of a circle

• The area of a circle

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CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

How many radians are there in a half-circle?

• 2 radians

• 3 radians

• 4 radians

• Pi radians

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CCSS.HSF.TF.A.1

What is the equivalent of Pi radians in degrees?

• 360 degrees

• 180 degrees

• 90 degrees

• 270 degrees

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CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

How many radii are captured in 2 Pi radians?

• About 4

• About 3

• About 6

• About 5

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CCSS.HSF.TF.A.1

What is Pi over 4 in degrees?

• 30 degrees

• 45 degrees

• 60 degrees

• 90 degrees

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CCSS.HSF.TF.A.1

What is 2 Pi over 3 in degrees?

• 150 degrees

• 120 degrees

• 60 degrees

• 90 degrees

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CCSS.HSF.TF.A.1

What is 3/4 of Pi in degrees?

• 90 degrees

• 120 degrees

• 135 degrees

• 150 degrees

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CCSS.8.G.C.9

CCSS.HSG.GMD.A.3

What is the simplified form of 4/6 Pi?

• 5/6 Pi

• 3/4 Pi

• 2/3 Pi

• 1/2 Pi

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CCSS.8.G.C.9

CCSS.HSG.GMD.A.3