В треугольнике ABC{"color":"#202335","fontFamily":"stix","language":"ru"} угол C{"color":"#202335","fontFamily":"stix","language":"ru"} равен 90°,{"color":"#202335","fontFamily":"stix","language":"ru"} cosB=914,{"color":"#202335","fontFamily":"stix","language":"ru"} AB =42.{"color":"#202335","fontFamily":"stix","language":"ru"} Найдите BC.{"color":"#202335","fontFamily":"stix","language":"ru"}
