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)#