укажите неправильное неравенство А)cos115⁰ меньше 0 ;
Б)sin 20⁰-sin 21⁰ меньше 0;
В)sin 3 больше 0;
Г)sin 3П//8* сos 3П//4 меньше 0;
Д)tg 170⁰-tg70⁰ больше 0.
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