const t1 = (a, b) => Math.hypot(b[0] - a[0], b[1] - a[1]); const t2 = (a, b) => Math.sqrt((b[0] - a[0]) ** 2 + (b[1] - a[1]) ** 2);
t1([-2, 5], [8, 7]);
t2([-2, 5], [8, 7]);