正弦定理管两角一边,余弦定理管两边一夹角;已知两边一对角要当心多解(sinAa=sinBb)。
We consider a dice game that played an important role in the historical development of probability. The famous letter…
一颗骰子扔 4 次,扔出 6 就赢——稳赚。两颗骰子扔 24 次,扔出双六就赢——他以为同理,结果稳赔。