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What is the difference between angles in radians and in terms of pi

3,219 views · Published 8 November 2012 · 4:38 · Indexed 1 November 2026

Channel: Brian McLogan · 2012 · Education

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👉 Learn about the angles on the unit circle. A unit circle is a circle which radius is 1 and is centered at the origin in the cartesian coordinate system. To construct the unit circle we take note of the points where the unit circle intersects the x- and the y- axis. The points of intersection are (1, 0), (0, 1), (-1, 0) and (0, -1). 

Recall that the angle around a point is 360 degrees or 2pi. Thus the total angle of a unit circle is 360 degrees (2pi). The angle of sectors of the unit circle can be computed once we know the number of equal division of the unit circle which resulted in the sector. Then we divide 360 degrees or 2pi (depending on whether the angle is measured in degrees or in radians) by that number of divisions of the unit circle.

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Organized Videos:
✅ Trigonometric Functions and The Unit Circle
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMq-ewwuWUiJyi25hWmFU9rk
✅ The Unit Circle | Learn About
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMpUvFiTSX9I1Qmknmi9fwTh
✅ Points of the Unit Circle | Learn About
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMrIfSXnL_vFq0ZbO-eo6Ux5
✅ Angles of the Unit Circle | Learn About
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMpFziLOs4DgfLlLwewTVGgC
✅ Trigonometric Functions of the Unit Circle
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMrfrvBwDY-HIKCv-4FgvAD5
✅ Find the Point on the Unit Circle
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMrRckk3lX1hLafHZcCABVLj
✅ Evaluate Trigonometric Functions Using the Unit Circle
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMoXRpXt9qSYMjdVA7Rj3KF5
✅ Evaluate the Six Trigonometric Functions Given and Angle
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMp1KREwvQxAEe2alDuMTSXO
✅ Evaluate trigonometric functions using a calculator
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMra7ZjRcMsqpwPKjdnLX-rj
✅ Evaluate trigonometric functions using identities
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMp-xG1q6DJpZlNeRC4n7hYd

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