I specified charset in the headers, do I need to specify it in the meta/head/html?

Question

I specified charset in the headers, do I need to specify it in the meta/head/html?

Answer 1

You don't need to. But it's polite.

Answer 2

You don't need to. The only exception I can think of is if your document is likely to be saved to a disk for later use and expected to work. If so, then it would be a good idea to include the character encoding within the HTML.