How do you find the derivative of $y = (cos x) (tan x)$ $y=(cosx)(tanx)$ ?

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Answer 1 · 2016-06-15T12:43:11

$\frac{d y}{d x} = cos x$ $(dy)/(dx)=cosx$

As $y = cos x \times tan x = cos x \times \frac{sin x}{cos x} = sin x$ $y=cosx xxtanx=cosx xxsinx/cosx=sinx$

Hence $\frac{d y}{d x} = cos x$ $(dy)/(dx)=cosx$

How do you find the derivative of y=(cosx)(tanx)y=(cosx)(tanx)?