What is a Phrygian cadence?

Answer 1

A Phrygian cadence (also know as a Phrygian half cadence) is found in minor key chord progressions, where the subdominant chord voiced in first inversion (iv6) and progresses to the dominant chord (V) at a cadence point.

Answer 2

A Phrygian cadence is a half cadence where (IV6) or in minor key (iv6) ends on a dominant chord (V).