
Plot the point in the polar coordinates and find three additional polar representations.

Answer to Problem 18E
Additional polar representations are
Explanation of Solution
Given:
Consider the polar coordinate as:
So, the directed distance from origin is:
Also, the directed angle is:
Convert this into pi radian as:
Now, draw this polar coordinate in xy-plane as below. First consider the angle. So, as the angle is negative, so the count of angle will be clockwise. So, the considered angle will be as below:
Now,the directed distance is −5. So, for the negative sign the
Now, find the two additional polar representations of the points
So, consider the positive angle. But, the angle is clockwise. So, the directed angle will be:
Convert into radian as:
Now, angle is positive and the plot is clockwise. So, the value of r is negative. So, the directed distance is:
So, the polar coordinate is :
So, consider the positive angle. So, the angle will be anticlockwise. So, the directed angle will be:
Convert into radian as:
Now, angle is positive and the plot is anticlockwise. So, the value of r is positive. So, the directed distance is:
So, the polar coordinate is:
Chapter 10 Solutions
Precalculus with Limits
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