В прямоугольном параллелепипеде ABCDA1B1C1D1{"color":"#202335","fontFamily":"stix","language":"ru"} известны длины рёбер AB=7{"color":"#202335","fontFamily":"stix","language":"ru"}, AD=24{"color":"#202335","fontFamily":"stix","language":"ru"}, AA1=42{"color":"#202335","fontFamily":"stix","language":"ru"}. Найдите синус угла между прямыми CD{"color":"#202335","fontFamily":"stix","language":"ru"} и A1C1{"color":"#202335","fontFamily":"stix","language":"ru"}.
