Question

The graph of r=-10cos theta has which of the following characteristics?

Answer 1

Given

The polar equation is given

`r=-10cos\theta`Step-by-step explanation

To determine the radius and center of the polar equation,

The polar equation of a circle centered on an axis , would take the forms.

Negative x-axis.

`r=-diameter\text{ }cos\theta`

Then the center is diameter divide by 2.

`(-10)/(2)=-5`

The diameter is 10.

Answer

Hence the circle, diameter of 10, center at (-5,0).

The correct option is C.