How do you write $x = 7$ into polar form?

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Answer 1 · 2015-12-02T07:35:38

$r = 7sec(theta)$

The question How do you convert rectangular coordinates to polar coordinates? has a list of equations used when converting between polar and rectangular systems along with their derivations.

For this problem we will be using

$x = rcos(theta)$

Substituting this into the given equation, we get:

$x = 7$

$=> rcos(theta) = 7$

Note that from the above, $cos(theta)!=0$ meaning we can divide to obtain

$r = 7sec(theta)$

How do you write x = 7x = 7 into polar form?