Преобразуйте:6*sin(x/3)*cos(x/3)

Question

Преобразуйте:
6*sin(x/3)*cos(x/3)

Answer 1

6sin(x/3)cos(x/3)=3sin(2x/3)

Answer 2

Формула двойного угла
sin2a=2sinacosa
Ответ:
6sin(x/3)cos(x/3)=3sin(2x/3)