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R=2/1- cosθ Find the eccentricity and identify the conic.

User Bersling
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Final answer:

To find the eccentricity and identify the conic section of the equation r = 2/(1 - cos(theta)), rewrite the equation in terms of x and y. Compare the resulting equation with the general form for a parabola to determine the eccentricity. If the eccentricity is equal to one, the path is a parabola.

Step-by-step explanation:

To calculate the eccentricity, we need to rewrite the equation in terms of x and y instead of polar coordinates. Using the conversion formulas x = r cos(theta) and y = r sin(theta), we have:

x = (2/(1 - cos(theta))) cos(theta) = 2cos(theta)/(1 - cos(theta))

y = (2/(1 - cos(theta))) sin(theta) = 2sin(theta)/(1 - cos(theta))

Now we can find the eccentricity by expressing x in terms of y:

x = ay^2 + by + c

Comparing the equations, we get:

a = 2/(1 - cos(theta))

b = 0

c = 0

Therefore, the eccentricity is 2/(1 - cos(theta)).

The conic section represented by this equation depends on the value of the eccentricity. If the eccentricity is equal to 1, the path is a parabola.

User Panupan
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