Question

поподробней!:(
cosПx/6=0.5

Answer 1

$cos frac{ pi x}{6} =0.5\ frac{ pi x}{6} = pm arccos(0.5) + 2 pi k, k in Z\ frac{ pi x}{6} = pm frac{ pi }{3} + 2 pi k, k in Z\ pi x = pm 2 pi + 12 pi k, k in Z\ x = pm 2 + 12 k, k in Z$