I downloaded the 60-day free trial of ArcGIS Desktop, and I would like to use the ArcObjects SDK. I can't find how to install it! Neither the downloads page for the trial nor the installation data contain a separate setup file for it, and it isn't included in the ArcGIS for Desktop installation program.
Long story short, the ArcObjects SDK 10.X or higher isn't included with the trial. The trial, as of today, only comes with the following media:
From my understanding, you would need to purchase the software to gain access to the ArcObjects SDK. I believe that this would become available if you were to get a Home-Use license, but you'd want to consult with Sales to confirm this. Once you receive your My.Esri account your should be able to find the install for the ArcObjects SDK in your available software downloads.