Find \(\frac{\mathrm d y}{\mathrm d x}\) if \(y = \cos x\).
- \(\sin x\)
-
\(- \sin x\)
- \(\tan x\)
- \(- \tan x\)
The correct answer is: B
Explanation
If \(y = \cos x\)
\(\frac{\mathrm d y}{\mathrm d x}\) =—\(\sin x\)
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