Evaluate $\lim\_{y\to 0} \dfrac {(x+y)\sec (x+y) - x\sec x}{y}$.

My Attempt:
$$=\lim\_{y\to 0} \dfrac {(x+y) \sec (x+y) - x\sec x}{y}$$
$$=\lim\_{y\to 0} \dfrac {x\sec (x+y) + y\sec (x+y) - x\sec x}{y}$$
$$=\lim\_{y\to 0} \dfrac {x(\sec (x+y) - \sec x) + y\sec (x+y)}{y}$$