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.