Let's not mix things up, the Standard Instrument Arrival has nothing to do with it:
3.1.2 Maximum angle of interception of
initial approach segment
Normally track guidance is provided along the initial
approach segment to the IF, with a maximum angle
of interception of:
a. 90° for a precision approach; and
b. 120° for a non-precision approach.
This 90/120 deg requirement is for the transition between the initial and intermediate segment. The IF is 11.4 DME TGO on radial 254. Hence the incept angle in this case is 0 degs.
P.s.
Splendid, you are of course right about the radial, don't know what I was thinking when I wrote that
