POLAR COORDINATES Graphing (Page 12 of 12)

As a final example, we will graph the conic section r = 6/(1-2cos(theta)) which has been defined in polar coordinates. We will remain in Degree mode. Define the function as r1.

 Y= key. CLEAR key.

 6 Divide key. Left parenthesis key. 1 Subtract key. 2 COS key. X,T,theta,n key. Right parenthesis key. Right parenthesis key.

Calculator screen image.

Graph the function using a standard window. We observe that this conic section is a hyperbola.

 ZOOM key. 6: menu selection. Calculator screen image.
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