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orangeface
@orangeface
July 2022
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Найдите значение, распишите подробно метод нахождения.
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boss9800
Cosa=√1-sin²a=√1-(-0.8)²=√0.36=-0.6 (т.к. cosa в 3 четверти отрицательный)
tga=sina/cosa=-0.8/0.6=-4/3
ctga=cosa/sina=0.6/-0.8=-3/4
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Answers & Comments
tga=sina/cosa=-0.8/0.6=-4/3
ctga=cosa/sina=0.6/-0.8=-3/4