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Chapter 10: Q 38. (page 683)

e=1; directrix is parallel to the polar axis 2units below the

pole.

Short Answer

Expert verified

The polar equation is

r=21-sin(胃)

Step by step solution

01

Step 1. Given information 

e=1; directrix is parallel to the polar axis 2units below the

pole.

02

Step 2. Identify e and p

It is given that

e=1

And directrix is parallel to the polar axis 2units below the

pole

So,p=2

03

Step 3. Set up the polar equation

It is given that

focus is at the pole.

The directrix is parallel to the polar axis 2units below the

pole.

So, we can apply standard polar equation formula

r=ep1-esin(胃)

Plug values e=1,p=2

r=1脳21-1sin(胃)r=21-sin(胃)

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