Предмет: Алгебра, автор: KETTI11

sin(-2π/3)>0; cos(-3π/4)>0; tag(-π/6)>0; ctg4π/9>0

Ответы

Автор ответа: Аноним

мы просто вычисляем значение используя таблицу значений тригонометрических функций

sin(150°)-cos(720°)+tan(225°)=1/2-1+1=1/2=0,

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