Early Qenya had rakta 'stretch out, reach (intr.)' from RAHA- (QL:78), Goldogrin raitha '1. reach at, reach for 2. intr. reach, extend' (GL:65). The root RAK- in the Etymologies has essentially the same meaning 'stretch out, reach' (both times the word 'arm' is also derived).
G. raitha '1. reach at, reach for 2. intr. reach, extend' (GL:65)