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"} AC=9,{"color":"#202335","fontFamily":"stix","language":"ru"} AB=30.{"color":"#202335","fontFamily":"stix","language":"ru"} Найдите sinB.{"color":"#202335","fontFamily":"stix","language":"ru"}
