Предмет: Алгебра, автор: akadoSte

найдите tgx ,если cosx= \frac{1}{ \sqrt{10} } и x ∈ (3π/2;2π)

eVa74: 1+tg^2=1/cos^2
akadoSte: это ответ?

Ответы

Автор ответа: shakhbozzokirov
0
1+tg^2x=1/cos^2x
i used
then ansser is -arctg3
and arctg3
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