Yes, and that is the purpose of debt. So long as you can average a return that exceeds the cost of your debt, a cost that may be tax deductible, you are ahead.
BUUUUT,
Be careful. If you lose the money to your trading, you're going to get bitten at both ends. Not only will you still owe the money, but you may be paying through the teeth for it.
Also, credit can work against your psychology. This is why my account is down $2100 right now. I was buying deeper and deeper into my system with borrowed money, and it started to hurt a little too much, so I exited the trade with that loss. It was an unfortunate event because my system was correct, and if I had stuck to it, I would have profited greatly instead of taking that loss.