В остроугольном треугольнике ABC{"color":"#202335","fontFamily":"stix","language":"ru"} высота AH{"color":"#202335","fontFamily":"stix","language":"ru"} равна 215,{"color":"#202335","fontFamily":"stix","language":"ru"} а сторона AB{"color":"#202335","fontFamily":"stix","language":"ru"} равна 8.{"color":"#202335","fontFamily":"stix","language":"ru"} Найдите cosB.{"color":"#202335","fontFamily":"stix","language":"ru"}
