Answer
The curve
$$
r=1+2 \sin (\frac{\theta}{2} )
$$
is graphed in the figure and the parameter interval is $[0, 4\pi]$
Work Step by Step
The curve
$$
r=1+2 \sin (\frac{\theta}{2} )
$$
is graphed in the figure and the parameter interval is $[0, 4\pi]$