your method only in special case can be OK.

jinjing · 2012-01-01 17:39:52Z

your method only in special case can be OK.簡介

來源: jinjing 於 2012-01-01 17:39:52 [檔案] [舊帖] [給我悄悄話] 本文已被閱讀：次 (192 bytes)

回答: 1 time deal... or... 70 times? 由花心鬼於 2012-01-01 14:40:53

The case is alfa+(2m-1)beta=90 degree,m should be whole number. This Q is not ...

If I were boss, let beta=1d,alfa=11d,...I'm a little bit like a drunk now,...

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