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Автор - annadfhh

определить знаки чисел sina, cosa, tga если 1)а=1 2)а=3 3)а=-3,4 4)а=-1,3

Ответ

Автор - alёna2013

1)sin +,cos +,tg +
2)sin +,cos +,tg +
3)sin -,cos +,tg -
4)sin -,cos +,tg -

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