For the point given

left parenthesis $0$ comma $5$ right parenthesis$(0,5)$

in rectangular$$ coordinates, find equivalent polar coordinates

$($r$,$theta$)$

that satisfy the conditions.

$($a$)$

r greater than $0$r$>0,$

$0$ degrees less than or equals theta less than $360$ degrees$0$$<360$

$($b$)$

r less than $0$r$<0,$

negative $180$ degrees less than theta less than or equals $180$ degrees