Find \(\frac{\mathrm d y}{\mathrm d x}\) if \(y = \cos x\).
A
\(\sin x\)
B
\(- \sin x\)
C
\(\tan x\)
D
\(- \tan x\)
Verified Correct Answer: B.
Step-by-Step Mathematical Solution
If \(y = \cos x\)
\(\frac{\mathrm d y}{\mathrm d x}\) =—\(\sin x\)
Source: Myschool Past Questions Archive (Record #54916)