# What is <mstyle displaystyle="true"> r

What is $r\mathrm{sin}\theta =5$ coordinates ?
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Step 1
The pass equations are
$\left\{\begin{array}{l}x=r\mathrm{cos}\theta \\ y=r\mathrm{sin}\theta \end{array}$
so
$r\mathrm{sin}\theta =y=5$
so the answer is $y=5$