Riding position ergonomics by style

Five preset riding-position categories, each modeled against a default rider (560 mm torso, 320 mm upper arm, 340 mm forearm, 450 mm thigh, 450 mm shin, 840 mm inseam (about 33 in)) with this tool's own law-of-cosines geometry solver. These are broad editorial planning categories, not specifications for any manufacturer or motorcycle model.