WAAAAY back when, Freehand had a button that you could click to ensure that the handles of an arc between two straight lines would precisely match the angles of those straight lines... you could pull them longer or shorter, but stay locked to that angle. Is there something similar in Illustrator now? Or am I just stuck eyeballing it? (It's driving my OCD crazy.)
Screengrab attached for reference.
Thx
Kris