Бахрамей
5 год назад
Упростите cos68°ctg22°
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Todorka
Nov 24, 2020
cos22°
соs68° = sin(90-68) = sin22°
ctg22° = cos22°/sin22°
cos68°*ctg22° = sin22°*cos22°/sin22° = cos22°
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cos22°
соs68° = sin(90-68) = sin22°
ctg22° = cos22°/sin22°
cos68°*ctg22° = sin22°*cos22°/sin22° = cos22°
