Questions & Answers about Die werktuigkundige is jonk.
Because in Afrikaans, die is just the ordinary word for the here, not a special proper noun.
It is only capitalized if it begins a sentence, as it does in Die werktuigkundige is jonk.
Be careful not to confuse:
- die = the
- Dié = this one / these / that one in certain contexts, usually written with an accent to mark emphasis or distinction
So in your sentence, Die is capitalized simply because it is the first word.