How to determine a point given the angle by not memorizing the unit circle

How to determine a point given the angle by not memorizing the unit circle

Assessment

Interactive Video

Mathematics

11th Grade - University

Hard

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The video tutorial reviews graphing practice and demonstrates how to graph the angle 4π/3. It explains how to find the reference angle, which is π/3, and discusses the importance of this angle in calculating the sine. The tutorial uses the unit circle to find the sine value, √3/2, and considers the quadrant to determine the sign of the sine value. The session concludes with a summary of the sine calculation process.

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2 questions

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1.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the Y coordinate at Pi over three on the unit circle?

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2.

OPEN ENDED QUESTION

3 mins • 1 pt

In which quadrant is the angle four Pi over three located, and should the Y coordinate be positive or negative?

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