Answer:
There are many ways to say Nice to meet you!
Explanation:
Depending of the situation being informal, Formal etc below are some of the ways you can say this.
es un gusto conocerte (informal) (singular)
. es un gusto conocerle (formal) (singular)
es un gusto conocerlo (formal) (singular, masculine)
. es un gusto conocerla (formal) (singular, feminine)
For what do you use a prefix astra
You take the yo form of the verb, drop the o, and switch the normal ending. So
Conocer = conozca