Предмет: Геометрия, автор: Renat99

найдите sinα и cosα если tg α =1/3

Ответы

Автор ответа: NY444

tg α =1/3 , тогда

α = arctg 1/3 = 18.4349 - это угол, тогда

sin 18.4349 = 0.3162

cos 18.4349 = 0.9486

Проверка:

tg α = sinα / cosα = 0.3162 / 0.9486 = 1/3

При решении использованы четырехзначные математические таблицы Брадиса.

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