Thread: Limit of trigonometric function

Can I get some help in finding the limit of the following trigonometric function?

Lt sin(a+3h)-3sin(a+h)+3sin(a+h)-sin a
h-->0 h^3



the h in the denominator is cube.


the denominator is sin(a+3h)-3sin(a+2h)+3sin(a+h)-sin a

Originally Posted by tariq_h_tauheed

Can I get some help in finding the limit of the following trigonometric function?

Lt sin(a+3h)-3sin(a+h)+3sin(a+h)-sin a
h-->0 h^3

Is your question like this:



or is your question like this:

Hello, tariq_h_tauheed!

Where did this problem come from?
It looks like we walked in on the middle of someone's work . . .

Could it be: .

If so, we have a chance of solving it . . . otherwise, forget it!