Chapter 13.2, Problem 2OE

To determine

To find: The points on the circle have the property that $\cos s=1$ ,and sketch a circle .

Answer to Problem 2OE

The only one point has the property that $\cos s=1$ .and sketch of the circle is shown in figure $\left(1\right)$ .

Explanation of Solution

Given information:

The given equation is

  $x^2+y^2=1$ .

To graph:

Using MAPLE to graph the given expression .

  $$

Figure $\left(1\right)$ .

Clearly, from the graph, when the terminal ray is along the $y-axis$ then $\cos s=1$ is at one point only .

  $\cos s=1$ When $\theta =0$

Therefore, the only one point has the property that $\cos s=1$ .