Final answer:
To express the equation r = 3 sin θ in rectangular coordinates, we can use the trigonometric identities x = r cos θ and y = r sin θ.
Step-by-step explanation:
To express the equation r = 3 sin θ in rectangular coordinates, we can use the trigonometric identities:
x = r cos θ
y = r sin θ
Substituting these equations with the given equation, we get:
x = 3 cos θ
y = 3 sin θ
So, the equation in rectangular coordinates is x = 3 cos θ and y = 3 sin θ.