Question

1- cos 2x
limx→0
x please solve this problem ​

Answer 1

Answer:

1-cos2x=2sin²x.......1

and on limx→0

this turn to be O

Hence answer is 0

Also remember always as a formula:

$(1 - \cos(2x )) \div x {}^{2} = 2$

by using the first equation we can solve it.