Breakdown of Mi hermano está cansado igual que yo después del trabajo.
Questions & Answers about Mi hermano está cansado igual que yo después del trabajo.
Spanish uses estar with temporary states or conditions, and ser with more permanent or defining characteristics.
- Está cansado = is (feels) tired right now, in this situation (after work).
- Es cansado would mean something like is tiring / is a tiring person (a permanent or habitual quality), and sounds strange if you just mean “he feels tired”.
So here, tiredness is a temporary state → está cansado.