Предмет: Алгебра, автор: Аноним

ctg (a-3π/2) упростить выражение​

Ответы

Автор ответа: NNNLLL54
0

Ответ:

Используем нечётность функции  ctg и применяем формулу приведения.

ctg\Big (a-\dfrac{3\pi }{2}\Big )=-ctg\Big(\dfrac{3\pi }{2}-a\Big)=-tga

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