Question #0d17d

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Answer 1 · 2018-01-15T23:12:05

Substitute #x = rcos(theta)#
Express the equation as #r# in terms of #theta#

Given: #x= 15#

Here is the graph of the #x=15#

www.desmos.com/calculator

Substitute #x = rcos(theta)#

#rcos(theta)= 15#

Express as r in terms of theta:

#r = 15sec(theta)#

Here is the graph #r = 15sec(theta)# in polar form:

www.desmos.com/calculator

Please observe that the graphs are identical.