The distance formula is d=√(x2-x1)² + (y2-y1)²
So... d =8.06226
Hope this helps
Im not sure but
(sarah + tara)/2 = 8
(20 + tara)/2 = 8
20 + tara = 16
tara = 4hours ?? it doesn’t make logical sense but this is the only way i can think of
sorry if this wasn’t helpful ;-;
The angle is in the 3rd quadrant so you subtract 180° from it giving you 23°
