Osvita.ua
cos x-3 0 0 2 =0; tg x+3 0 0 2 =1; x-3 0 0 2 = П 2 + П n,n ∊ z ; x+3 0 0 2 = П 4 +П k,k ∊ z ; x= 7П 6 +2 П n,n ∊ z ; x= П 3 +2П k,k ∊ z. Відповідь: x=± 5 П 6 +2 П t , t ∊ z . ................
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