Найти по ч.о. sin t, cos t, tg t, ctg t, t= 7π/3 - вопрос №982894873 от nastyazhovnirenko 25.02.2021 12:17

Question

Математика: Найти по ч.о. sin t, cos t, tg t, ctg t, t= 7π/3

nastyazhovnirenko · Answer

Sin 7π/3 = sin (2π + π/3) = sin π/3 = sqrt3/2cos 7π/3 = cos (2π + π/3) = cos π/3 = 1/2tg 7π/3 = tg (2•π + π/3) = tg π/3 = sqrt3ctg 7π/3 = ctg (2•π + π/3) = ctg π/3 = sqrt3/3...