How do you convert the rectangular coordinates (9, 0) into polar coordinates?

asked Aug 13, 2017 141k views

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3 votes

Hello,

x=r*cos t
y=r*sin t

==>r²=x²+y² ; r²=9²+0²=81==>r=9
y/x=tg t ; 0=tg t==>t=2kπ we may use 0 in [-π π]

so r=9,t=0

Alex Ivanov answered Aug 20, 2017

8.6k points

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