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Тригонометрія 8 клас

Чи знаєте ви тригонометричні функції?

QuestionAnswer
Синусом гострого кута прямокутного трикутника ... називають відношення протилежного катета до гіпотенузи
Косинусом гострого кута прямокутного трикутника ... називають відношення прилеглого катета до гіпотенузи
Тангенсом гострого кута прямокутного трикутника ... називають відношення протилежного катета до прилеглого
Котангенсом гострого кута прямокутного трикутника ... називають відношення прилеглого катета до протилежного
Тангенс дорівнює відношенню ... синуса до косинуса
Котангенс дорівнює відношенню .. косинуса до синуса
Тангенс і котангенс одного й того ж кута є ... взаємно оберненими числами
Сума квадратів синуса та косинуса одного й того ж кута... дорівнює одиниці
cos (90 - a) = sin a
sin (90 - a) = cos a
tg (90 - a) = ctg a
ctg (90 - a) = tg a
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