Answer:
Step-by-step explanation:
The given equation is
[tex]r=\frac{2.1}{1+0.7cos\theta}[/tex]
This equations represents a conic section in polar form, where the coefficient of the cosine function is the eccentricity of the conic section.
So, in this case, the eccentricity is [tex]e=0.7[/tex], which indicates that the equation belong to an ellipse, because the eccentricy of ellipses are between 0 and 1.
Therefore, the equation represents an ellipse with an eccentricity of 0.7.
