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If `y=cost and x=sint`, then what is `(dy)/(dx)` equal to?A. xyB. `x//y`C. `-y//x`D. `-x//y`

Answer» Correct Answer - D
Let `y=cost, x=sint`
`(dy)/(dt)=-sint,(dx)/(dt)=cost`
`(dy)/(dx)=(dy//dt)/(dx//dt)=-(sint)/(cost)=-(x)/(y)`


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