Используем формулу sin(a) * sin(b) = 1/2 * (cos(a-b) - cos(a+b))
4sin(π/24)sin(5π/24) = 4 * 1/2 (cos(-4π/24) - cos(6π/24)) = 2(cos(π/6)-cos(π/4)) = √3 - √2
Используем формулу sin(a) * sin(b) = 1/2 * (cos(a-b) - cos(a+b))
4sin(π/24)sin(5π/24) = 4 * 1/2 (cos(-4π/24) - cos(6π/24)) = 2(cos(π/6)-cos(π/4)) = √3 - √2