# Math Help - limit of a sequence

1. ## limit of a sequence

Am revising over limits and have forgotten mostly how to work with them,

need to find the limit of the following sequence;

n(1-cos(2/n))

obviosuly this can be done by using the standard limits but i don't know how to approach it,

Any help would be greatly appreciated,

Cheers.

2. lim as n-> infinite
n(1-1)

3. Originally Posted by monster
Am revising over limits and have forgotten mostly how to work with them,

need to find the limit of the following sequence;

n(1-cos(2/n))

obviosuly this can be done by using the standard limits but i don't know how to approach it,

Any help would be greatly appreciated,

Cheers.
rewrite as ...

$2 \cdot \frac{1 - \cos\left(\frac{2}{n}\right)}{\frac{2}{n}}$

basic form for the limit of this trig expression should now look familiar