Question

find the limit as x->0 of (1-cos3h)/((cos^2)5h-1)

Answer 1

just asking, did you double check the numbers?

Answer 2

yeah, just to be clear: find the limit as x -> 0 \[\frac{ 1-\cos3h }{ \cos ^{2}5h - 1}\]

Answer 3

And there is no x in that expression!

Answer 4

lol

Answer 5

Perhaps you mean h. @j88clark

Answer 6

yeah

Answer 7

The limit is a 0/0 type which is an indeterminate form. So use the L'hospital's rule.

Answer 8

were supposed to be transforming it with identities

Answer 9

I think, @Isaiah.Feynman is correct, I cannot think of another way as well

Answer 10

the denominator can be re written as \[-\sin^{2}5h\]

Answer 11

@j88clark