The final price would be $67.20
Angle x is the same as the angle opposite it so 63 degrees
angle y = 180 - 72 - 63 = 45 degrees
angle z is the same angle shown at point B so 72 degrees
(x, y) = ( cos 45, sin 45) =
The correct option is A
72° because the sum of all the exterior angles is always 360°. In a regular polygon, you need to divide 360° by the number of sides, in this case 5.
360°/5 = 72°