I ran into an interesting question a few weeks ago where a faculty member was working with a PDF that had some pages in portrait orientation and others in landscape orientation.  When she went to print the file, the landscape pages printed like they were portrait oriented, and part of the information on the page was cut off.  Needless to say, she needed the landscape pages to page to print with a landscape orientation.

Here’s the solution:

In the Page Handling section of the Print dialog box, check the box Auto-Rotate and Scaling

Once you’ve done that, set the rest of your print options as you normally would and click OK.