Вычислите:2×(3-sin п/12 ×соs п/12)

2×(3-sin п/12 ×соs п/12) = 2(3- (sin pi/6)/2)= 2(3 - 1/4)=6 - 1/2 = 5 1/2 = 11/2 = 5.52sinxcosx=sin 2x