If \(y = \cos x,\,u = \sin x\,then\,\frac{{dy}}{{du}} = 1\)

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8 + 7 =
Solve this simple math problem and enter the result. E.g. for 1+3, enter 4.

If \(y = \cos x,\,u = \sin x\,then\,\frac{{dy}}{{du}} = 1\)

-tan x

cos x

-cot x

-cosex c