найдите sin236* если sin28*=a. Created by ilyasovaaysel26. algebra-ru

Ответ:5) Объяснение:так как 0<28<90 - то косинус положителенtable123table123Ответ:Объяснение:sin236=sin(180+56)=-sin56, ( формула: sin2a=2sina*cosa) =-2sin28*cos28=-2*a*cos28= (формула: cos^2a=1-sin^2a) =-2*a*V(1-a^2), (1-a^2 стоит под корнем V )Новые вопросы в Алгебраза якого значення параметра c квадратний тричлен 25x^2+30x+c можна записати у вигляді повного квадрата суми двох одночленівиз пункта А в пункт В одновременно выехали два автомобиля. Первый проехалс постоянной скоростью весь путь. Второй проехал первую половину пути со ск…оростью40 км/ч, а вторую половину пути проехал со скоростью, большей скорости первого на 15 км/ч,в результате чего прибыл в В одновременно с первым автомобилем. Найдите скоростьпервого автомобиля. Ответ дайте в км/ч.из пункта А в пункт В одновременно выехали два автомобиля. Первый проехалс постоянной скоростью весь путь. Второй проехал первую половину пути со ск…оростью40 км/ч, а вторую половину пути проехал со скоростью, большей скорости первого на 15 км/ч,в результате чего прибыл в В одновременно с первым автомобилем. Найдите скоростьпервого автомобиля. Ответ дайте в км/ч.перший член арифметичної прогресії a1= -16 а різниця d = 6 чому дорівнює сума 12 перших членів прогресії4,5 завдання, дуже потрібноз автостоянки по автошляху вирушили легковий автомобіль зі швидкістю 72 км/год та вантажна машина зі швидкістю 56 км/год. яка відстань буде між ними ч…ерез 1 год 30 хв?При каком значении х многочлен P(x) =x³ + 4x² -12x +17 представляет собой полный квадрат?Если делитель x - 2, частное x +3, а остаток равен 5, то чему равно делимое?Какое наибольшее и наименьшее значение принимает sin²α ?(6х²-3)+7х(6х²-3)-4у(6х²-3)ПредыдущийСледующийВместе мы знаем большеЭтот сайт использует cookies Политика Cookies . 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