Math Problem Statement

locate and mark point in the unit circle for 3PI/2

Solution

On the unit circle, angles are measured in radians, starting from 00 radians (or 00^\circ) at the positive xx-axis and increasing counterclockwise.

To locate 3π2\frac{3\pi}{2}:

  1. Convert to degrees (if needed):
    3π2 radians=270\frac{3\pi}{2} \text{ radians} = 270^\circ

  2. Position on the unit circle:
    An angle of 270270^\circ corresponds to the point on the negative yy-axis.

  3. Coordinates:
    The coordinates of this point are (0,1)(0, -1), because the point is directly down from the origin on the unit circle.

So, the point corresponding to 3π2\frac{3\pi}{2} on the unit circle is (0, -1).

Would you like more details on how the unit circle works, or do you have any questions?


Here are some related questions:

  1. What are the coordinates for π2\frac{\pi}{2} on the unit circle?
  2. Can you explain why 3π2\frac{3\pi}{2} corresponds to 270270^\circ?
  3. How do you convert between degrees and radians?
  4. What is the importance of the unit circle in trigonometry?
  5. How would you locate 7π4\frac{7\pi}{4} on the unit circle?

Tip: Always remember that a full circle is 2π2\pi radians or 360360^\circ. This helps in converting and understanding angle positions easily.

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Math Problem Analysis

Mathematical Concepts

Trigonometry
Unit Circle
Radians and Degrees

Formulas

Radians to Degrees Conversion: θ (in degrees) = θ (in radians) * (180 / π)

Theorems

Unit Circle Theorem: Points on the unit circle are of the form (cos θ, sin θ)

Suitable Grade Level

Grades 10-12