Hi, I'm having a lot of trouble in solving the following limit problems (all of the, as x --> 0):

1) $\displaystyle \frac{sin 7x}{sin 4x}$

2) $\displaystyle \frac{sin(cos x)}{sec x}$

I'm very confused with these two problems, and would greatly appreciate any help (I'm not allowed to differentiate the functions).

Thanks