Let $x ( t ) = \sin t , y ( t ) = \cos t - t$

Multiple Choice

Let $x ( t ) = \sin t , y ( t ) = \cos t - t$ be the parametric equations of a curve. Then $\frac { d y } { d x }$ is

A) $\tan t - \sec t$
B) $\cot t - \csc t$
C) $- ( \tan t + \sec t )$
D) $\tan t + \sec t$
E) $\cot t + \csc t$