Ok I think I've worked it out by comparing these:
- أَنْتَ = https://www.duolingo.com/dictionary/Arabic/%D8%A3%D9%8E%D9%86%D9%92%D8%AA%D9%8E-pronoun-personal+pronoun-second+person-masculine-singular/8f7554f03292f7731486b01ae682bf90
أَنْتَ = (You are (male
- أَنْتِ = (You are (female
As far as I can tell, they're pronounced the same. Sorry for the bug above. It's meant to read You are (male) and You are (female). I think it's having a hard time writing right to left and left to right at the same time.
Arabic أَنْتَ // Hebrew אתה (masc) / את (fem) and the nun in أَنْتَ // the unpronounced nun in Syriac ܐܢܬ (at), which however is pronounced in Aramaic אנתה / אנת. Here's a link to a chart of common characteristics of pronouns in Semitic languages: http://www.ijhssnet.com/journals/Vol_4_No_10_August_2014/11.pdf