using {HEAD ~ the tested angular difference} between {TAIL ~ the first test toe angle} and the second test toe angle to determine whether the tested angular difference is within the alignment range 
between
using { HEAD ~ the tested angular difference } between { TAIL ~ the first test toe angle } and the second test toe angle to determine whether the tested angular difference is within the alignment range
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH