What is the radian measure of an angle

👉 Learn about angles in trigonometry. An angle is the figure formed by two rays sharing the same endpoint. The two rays are called the sides of the angle while the common endpoint of the two rays is called the vertex of the angle.
Angle is measured in radians or in degrees. The radian is the measure of the length of an arc of a unit circle or the measure of the radius of the circle on the circumference of the circle. pi radians is equivalent to 180 degrees. One complete revolution about a point is equivalent to 2pi radians and 360 degrees. A plane is usually divided into 4 equal parts called the quadrants.
The angle measured in the anti-clockwise direction is called a positive angle while a negative angle is measured in the clockwise direction. We measure angles starting from the positive x-axis.
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Organized Videos:
✅ Angles in Trigonometry
• Angles in Trigonometry
✅ Solve Problems with Arc Length
• Solve Problems with Ar...
✅ Angles in Trigonometry | Learn about
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✅ Sketch Angles in Standard Position
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✅ Find the Quadrant of the Angle
• Find the Quadrant of t...
✅ Find the Reference Angle
• Find the Reference Angle
✅ Complement and Supplement of an Angle
• Complement and Supplem...
✅ Convert Radians to Degrees
• Convert Radians to Deg...
✅ Convert Degrees to Radians
• Convert Degrees to Rad...
✅ Convert Degrees to Degree Minute Seconds
• Convert Degrees to Deg...
✅ Convert Degree Minute Seconds to Degrees
• Convert Degree Minute ...
✅ Coterminal Angles | Learn About
• Coterminal Angles | Le...
✅ Find Coterminal Angles | 0 and 2pi
• Find Coterminal Angles...
✅ Find Coterminal Angles | 0 and 360
• Find Coterminal Angles...
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[@svtismyhome135]

This video is a life saver. I learned more here than in my class.

[@samtsai8369]

Great and lucid explanation! Thanks.

[@brianmclogan]

you need another video in my collection. Anyways the formula is S = rx where s = Arc length r= radius and x = your angle. Make sure your angle is in radians so for your problem 8 = 11x solve for x. Your answer will be in radians. and yes the equation is that simple

[@Helperbot-2000]

nice video :D really easy to understand, thanks!

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[@anwarh.joarder8644]

How do you know that perimeter is 2 pi times r?

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Amazing, great explanation!

[@brianmclogan]

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[@fbmbmx743]

Correct me if i'm wrong but pie/4 would not be that close to 2pie. pie/4 is at 45 degree

[@brianmclogan]

Correct

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[@hamyltonporter5211]

what is a radian measure of 60 degrees

[@Efraind2802]

Pi/3

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