Question

2cos(пі поделить на 3) –ά)-√3sinά-cosά

Answer 1

$2cos(pi/3 - a) = sqrt{3}sina - cosa = 2(cos(pi/3)cosa + sin(pi/3)sina) - sqrt{3}sina - cosa = 2(0.5cosa + frac{sqrt{3}}{2}sina) - sqrt{3}sina - cosa = 0$