Angered by the editorial in the newspaper, my mother wrote an indignant letter to the editor.
He asked me questions which made me quite indignant
The judge was indignant as police searched his car.
Has and have are two forms of the infinitive to have Has is used for he, she and it, and generally speaking third person singular. (eg Richard has a lot of friends) Have is used for all other case...
Has is used in the present: Tom has a soccer tournament today. Had is for the past: Lauren had an ice cream cone three hours ago.