彼女の怒ったわけを言ってください。

she; her; her; girlfriend; sweetheart

indicates possessive; nominalizes verbs and adjectives; substitutes for "ga" in subordinate phrases; (at sentence-end, falling tone) indicates a confident conclusion; (at sentence-end) indicates emotional emphasis; (at sentence-end, rising tone) indicates question

to get angry; to get mad; to tell someone off; to scold; to be angular; to be square

conclusion from reasoning, judgement or calculation based on something read or heard; reason; cause; meaning; circumstances; situation

indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.

to say; to utter; to declare; to name; to call; to go (e.g. "the alarm went ping"); to make a noise

to give; to confer; to bestow; to kindly do for one; to oblige; to favour; to favor