Heres a nice challenge - in these given motor values, I want to find the "not shown" values. Power factor, primarily.

Old Compressor:
Manufacturer:
Not available
Frame:
256TCZ
RPM:
3600
HP:
30
Volts/Amps/Phase
575/36/3
Service Factor:
Not shown
Power Factor:
Not shown




Old Drawing Machine:
Manufacturer:
Crompton P
Frame:
236-T
RPM:
1725
HP:
50
Volts/Amps/Phase
575/50/3
Service Factor:
Not shown
Power Factor:
Not shown


Thanks for any help. I know pf = tp / ap

tp = V x I

but i cant find ap to complete the formula to find pf.