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à¤Ã×èͧÁ×ͧ͢ËÑÇ¢éÍ | ¤é¹ËÒã¹ËÑÇ¢é͹Õé |
#1
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ǧ¡ÅÁ¡ÑºÊÒÁàËÅÕèÂÁ¤ÃѺ
ãËé A B C à»ç¹¨Ø´º¹Ç§¡ÅÁÃÑÈÁÕ 1 ˹èÇ â´Â·Õè |AB|=$\sqrt{acos\theta - b} $ áÅÐ |BC| = $\theta $
áÅÐ AC à»ç¹àÊé¹¼èÒ¹ÈÙ¹Âì¡Åҧǧ¡ÅÁ ¨§ËÒ a+b ªèÇ·Õè¹Ð¤ÃѺº |
#2
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¶éÒÁÕà§×è͹ä¢á¤è¹Õé ¹èÒ¨ÐÁÕä´éËÅÒ¤èҹФÃѺ
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#3
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$\left|BC\right| =\theta $ ËÃ×Í ¤ÇÒÁÂÒǢͧÊèǹâ¤é§ $BC=\theta $ ¤ÃѺ
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#4
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|BC| ¤ÃѺ ã¹â¨·Âìà¢Õ¹Ẻ¹ÕéàÅ (¼Á¡ç¤Ô´àËÁ×͹¤Ø³ Amankris àŤÃѺ)
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#5
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¼Á¤Ô´ÇèÒ⨷Âì¹èÒ¨Ðà»ç¹ ¤ÇÒÁÂÒǢͧÊèǹâ¤é§ $BC=\theta $ ÁÒ¡¡ÇèÒ¤ÃѺ
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#6
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¶éÒÊÁÁµÔà»ç¹à»ç¹¤ÇÒÁÂÒÇÊèǹâ¤é§¨ÐÁդӵͺªèÇÂáÊ´§ÇÔ¸Õ¤Ô´ãËé˹èÍÂä´éãËÁ¤ÃѺ ??
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#7
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¤ÇÒÁÂÒǤÍÃ촢ͧǧ¡ÅÁ˹Öè§Ë¹èÇ $=\sqrt{2-2cos\theta } $
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#8
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µÑ¹ÁÒ¡àŤÃѺµÍ¹¹Õé T T
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#9
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ãËé $O$ à»ç¹¨Ø´ÈÙ¹Âì¡Åҧǧ¡ÅÁ ÅÒ¡ $OB$ ¨Ðä´é $B\hat OC = \theta $ áÅéÇãªé¡® cos
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