import math

# 定义角度
angle_54 = 54
angle_18 = 18

# 将角度转换为弧度
rad_54 = math.radians(angle_54)
rad_18 = math.radians(angle_18)

# 计算正切值的平方
tan_54_squared = math.tan(rad_54) ** 2
tan_18_squared = math.tan(rad_18) ** 2

# 计算结果
result = tan_54_squared - tan_18_squared

print(result)