Предмет: Алгебра, автор: Lubovkam

Приведите к тригонометрической функции угла из промежутках ( 0°;90°):cos356°.

Ответы

Автор ответа: mihailzaycev1

по формуле приведения cos(270+86)=sin86
270 и 90 градусов меняют функцию на противоположную

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