Let And $x = \rho \sin \varphi \cos \theta$ Then $y = \rho \sin \varphi \sin \theta$

Multiple Choice

Let and $x = \rho \sin \varphi \cos \theta$ Then $y = \rho \sin \varphi \sin \theta$ is

A) $\rho ^ { 2 } \sin \varphi$
B) $\rho \sin \varphi$
C) $\rho ^ { 2 } \cos \varphi$
D) $\rho ^ { 2 } \sin \theta$
E) $\rho \cos \varphi$