Ask HN: How do you connect with VC when you know nobody?

I understand the best way to connect with VC is via introduction by someone who knows the VC.

But what if you are totally from different industry, you have no connection (or 1st degree of friends who can make the introduction to VC)?

What can you do to get the attention of the VC?

I heard using angel.co is one way to do it.

I am interested to hear some people opinion about it.

Thanks.