import math

fin = open("input.txt", "r")
shipX, shipY = map(float, fin.readline().split())
shipDirectionVecX, shipDirectionVecY = map(float, fin.readline().split())
shipLeanVecX, shipLeanVecY = map(float, fin.readline().split())
enemyX, enemyY = map(float, fin.readline().split())
fin.close()

leftsideVecX = -shipDirectionVecY
leftsideVecY = shipDirectionVecX

rightsideVecX = shipDirectionVecY
rightsideVecY = -shipDirectionVecX

verticalAngle = (1 / math.sqrt(1 + shipLeanVecX ** 2 +
                               shipLeanVecY ** 2))
fout = open("output.txt", "w")
if (verticalAngle > 1 / 2):
    verticalAngle = math.acos(verticalAngle) * (180 / math.pi)
    leftVerticalPitch = (shipLeanVecX * leftsideVecX + shipLeanVecY * leftsideVecY) / (
            math.sqrt(1 + shipLeanVecX ** 2 + shipLeanVecY ** 2) * math.sqrt(leftsideVecX ** 2 + leftsideVecY ** 2))
    if (leftVerticalPitch > 0):
        leftVerticalPitch = verticalAngle
        rightVerticalPitch = -verticalAngle
    else:
        leftVerticalPitch = -verticalAngle
        rightVerticalPitch = verticalAngle
else:
    fout.write("kek1")
    exit(0)

enemyVecX = enemyX - shipX
enemyVecY = enemyY - shipY
horizontalAngle = (enemyVecX * shipDirectionVecX + enemyVecY * shipDirectionVecY) / (
        math.sqrt(enemyVecX ** 2 + enemyVecY ** 2) * math.sqrt(shipDirectionVecX ** 2 + shipDirectionVecY ** 2))

if (abs(horizontalAngle) <= math.sqrt(3) / 2):
    horizontalAngle = math.acos(horizontalAngle) * (180 / math.pi)
else:
    fout.write("kek2")
    exit(0)

boardSide = (leftsideVecX * enemyVecX + leftsideVecY * enemyVecY) / (
            math.sqrt(leftsideVecX ** 2 + leftsideVecY ** 2) * math.sqrt(enemyVecX ** 2 + enemyVecY ** 2))
if (boardSide >= 0):
    boardSide = 1
else:
    boardSide = -1

fout.write(str(boardSide) + "\n")
fout.write(str(-(horizontalAngle - 90)) + "\n")
fout.write(str(verticalAngle) + "\n")
fout.write("au-revoir")
fout.close()