Identify the quadrant that the given angle is located in. 2 π 3 \frac{2\pi}{3} 3 2 π radians

In this problem, we're asked to identify what quadrant of our unit circle our given angle is in and the angle we're given here is in radians. It's 2 pi over 3 radians. Now again, here we're going to use our knowledge of fractions and those angles that we already know on our unit circles. So looking at this angle, 2 pi over 3. Something that might be helpful to you when looking at problems specifically like this is to ignore that pi in your radian angle measure. Now you shouldn't do this all the time, but whenever we're just looking at where our angle fits into our unit circle, this might be helpful because you might be more familiar with fractions when you don't have to worry about that pie. So here, if we consider this angle or this fraction to be 2 thirds and we look at our unit circle and we see that we start with fraction to be 2 thirds and we look at our unit circle and we see that we start with 0 and ignoring this pie here, this is really a fraction of 1 half. And then here with this pie, this is a fraction of 1. Now when we consider where 2 thirds fits into that, I know that 2 thirds fraction of 1. Now when we consider where 2 thirds fits into that, I know that 2 thirds is less than 1, so I know that it has to be either in quadrant 1 or quadrant 2. Now when I consider its relation to 1 half, 2 thirds is a fraction that is definitely larger than 1 half. So I know that 2 thirds is greater than 1 half, which also tells me that 2 pi over 3 is greater than pi over 2. So that tells me that this fraction, this angle, sits right in between my fraction of pi over 2 and pi right in quadrant 2. So this angle, 2 pi over 3 radians, is in quadrant 2. Thanks for watching, and let me know if you have questions.

Identify the quadrant that the given angle is located in.2π3\fra...

0. Fundamental Concepts of Algebra3h 29m

1. Equations and Inequalities3h 27m

2. Graphs1h 43m

3. Functions & Graphs2h 17m

4. Polynomial Functions1h 54m

5. Rational Functions1h 23m

6. Exponential and Logarithmic Functions2h 28m

7. Measuring Angles39m

8. Trigonometric Functions on Right Triangles2h 5m

9. Unit Circle1h 19m

10. Graphing Trigonometric Functions1h 19m

11. Inverse Trigonometric Functions and Basic Trig Equations1h 41m

12. Trigonometric Identities 2h 34m

13. Non-Right Triangles1h 38m

14. Vectors2h 25m

15. Polar Equations2h 5m

16. Parametric Equations1h 6m

17. Graphing Complex Numbers1h 7m

18. Systems of Equations and Matrices1h 6m

19. Conic Sections2h 36m

20. Sequences, Series & Induction1h 15m

21. Combinatorics and Probability1h 45m

22. Limits & Continuity1h 49m

23. Intro to Derivatives & Area Under the Curve2h 9m

My Courses

Chemistry

Biology

Math

Physics

Business

Social Sciences

Programming

Product & Marketing

Identify the quadrant that the given angle is located in.
$\frac{2\pi}{3}$ radians