Найдите производную функции: f(x)= cos(x-p/6)

[latex]f(x)=cos(x-\frac{\pi}{6});\\ f'(x)=(cos(x-\frac{\pi}{6}))'=-sin(x-\frac{\pi}{6})*(x-\frac{\pi}{6})'=\\ -sin(x-\frac{\pi}{6})*1=-sin(x-\frac{\pi}{6})[/latex]

производная данной функции: -sin ( х - пи/6)