Предмет: Геометрия, автор: nikatanya83

Выберите выражение, значение которого равно значению выражения cos30∘ cos120∘ sin60∘ sin30∘ cos150∘

nikatanya83: Выберите выражение, значение которого равно значению выражения cos30∘

nikatanya83: cos120∘
sin60∘
sin30∘
cos150∘

Ответы

Автор ответа: aruhihovakimian

Ответ:

cos30°=sin60°

Объяснение:

cos30°= √3/2

cos120°=-1/2

sin60°=√3/2

sin30°=1/2

cos150°=-√3/2

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