Math Problem Statement

For the angle

7π/6 Graph the angle in standard position. Show both the initial and terminal sides.

Solution

To graph the angle 7π6\frac{7\pi}{6} in standard position, we need to understand the following steps:

  1. Convert the angle to degrees (optional):
    Since 7π6\frac{7\pi}{6} is already in radians, we don't need to convert it to degrees to plot it on the unit circle. However, for better understanding, we can convert it to degrees.
    7π6×180π=210\frac{7\pi}{6} \times \frac{180^\circ}{\pi} = 210^\circ The angle of 7π6\frac{7\pi}{6} radians is equivalent to 210 degrees.

  2. Locate the angle on the unit circle:
    The angle 7π6\frac{7\pi}{6} is more than π\pi (which is 180180^\circ), so it is in the third quadrant.
    To find the terminal side, start at the positive xx-axis (initial side) and rotate counterclockwise around the origin.

  3. Draw the initial side:
    The initial side of the angle in standard position starts at the origin and extends along the positive xx-axis.

  4. Draw the terminal side:
    To find the terminal side for 7π6\frac{7\pi}{6}, rotate counterclockwise from the initial side. Since 7π6\frac{7\pi}{6} is in the third quadrant (between π\pi and 3π2\frac{3\pi}{2}), the terminal side will end up in the third quadrant.

Graph of the Angle 7π6\frac{7\pi}{6}

To illustrate this, we can visualize a coordinate plane with the initial side along the positive xx-axis and the terminal side passing through the third quadrant.

Let's draw the graph:

  • Initial Side: Along the positive xx-axis.
  • Terminal Side: Extends into the third quadrant at an angle of 7π6\frac{7\pi}{6} from the positive xx-axis.

Here is the step-by-step approach to draw the graph:

  1. Draw the coordinate axes: Mark the xx (horizontal) and yy (vertical) axes.
  2. Mark the unit circle: Draw a circle centered at the origin (0,0) with a radius of 1.
  3. Draw the initial side: This is the positive xx-axis line.
  4. Determine the terminal side:
    • Since 7π6=π+π6\frac{7\pi}{6} = \pi + \frac{\pi}{6}, rotate 180180^\circ (or π\pi radians) and then an additional 3030^\circ (or π6\frac{\pi}{6} radians).
    • The terminal side should be located 3030^\circ past 180180^\circ (which is the negative xx-axis).

Visual Representation of the Angle

To visualize the angle 7π6\frac{7\pi}{6}:

  1. Draw the initial side along the positive xx-axis.
  2. Rotate counterclockwise to reach 210 degrees or 7π/67\pi/6.
  3. Mark this terminal side in the third quadrant.

Conclusion

You should now have a graph with:

  • The initial side along the positive xx-axis.
  • The terminal side in the third quadrant, indicating a counterclockwise rotation of 210210^\circ or 7π6\frac{7\pi}{6} radians.

Would you like me to provide more details on graphing angles or any related topics? Here are some related questions to consider:

  1. What are the coordinates of the terminal point on the unit circle for the angle 7π6\frac{7\pi}{6}?
  2. How would the graph look for a negative angle such as 7π6-\frac{7\pi}{6}?
  3. What is the reference angle for 7π6\frac{7\pi}{6}?
  4. How do we calculate the sine and cosine of the angle 7π6\frac{7\pi}{6}?
  5. What are coterminal angles, and can you find one for 7π6\frac{7\pi}{6}?

Tip: When plotting angles in standard position, always start from the positive xx-axis and rotate counterclockwise for positive angles.

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Math Problem Analysis

Mathematical Concepts

Trigonometry
Unit Circle
Radians and Degrees

Formulas

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Theorems

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Suitable Grade Level

Grades 10-12