How do you simplify $- cos x tan (- x)$ $-cosxtan(-x)$ ?

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Answer 1 · 2016-12-10T17:50:13

$- cos x tan (- x) = - cos (x) \times \frac{sin (- x)}{cos (- x)}$ $-cosxtan(-x)=-cos(x)xx(sin(-x))/(cos(-x))$

$cos (x) = cos (- x)$ $cos(x)=cos(-x)$

$-1(cancel(cos(x)))xx(sin(-x))/cancel(cos(x))=-sin(-x)=sinx$

How do you simplify -cosxtan(-x)−cosxtan(−x)-cosxtan(-x)?