Question

The value of lim x -> 0​ 1-cosx / x^2 is​

Answer 1

Answer:

1/2

It would be much easier by L'hopital's rule .

Otherwise u can simplify the numerator.

1-cosx=2 sin²(x/2).

and then u can use the formula

lim x tends to 0 sinx/x =1.