Question

СРОЧНО!!!!! решите уравнение $cos( frac{ pi }{3} - 2x) = frac{1}{2}$

Answer 1

$cos (frac{pi}{3} -2x)=0.5\ \ frac{pi}{3} -2x=pmarccos(0.5)+2pi n,n in Z\ \ frac{pi}{3} -2x=pm frac{pi}{3}+2pi n,n in Z\ \ -2x=pmfrac{pi}{3} -frac{pi}{3} +2pi n,n in Z|:(-2)\ \ x=mpfrac{pi}{5}+frac{pi}{6} -2pi n,n in Z$