Question

lim x -0
$\frac{ \cos(x) - \cos(a) } {x - a}$
​

Answer 1

Step-by-step explanation:

cosx/x×x- cosa/a×a/x-a

=1

Answer 2

$\lim_{x \to \ 0} \frac{cosx-cosa}{x-a}$

Substitute x = 0

= $\frac{cos0-cosa}{0-a}$

= $\frac{cosa-1}{a}$

HOPE IT HELPS!!