#1
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µÃÕ⡳
àÍèÍæ ¤×ͼÁÍÂÒ¡ÃÙéÇèÒ ¡ÒÃ+ µÃÕ⡳ +Âѧä§ÍéФÃѺ
ex1. sin30+cos30+tan30 ÍÂÒ¡ÃÙéÍéФÃѺ +äÁè໹ (ÍÂÙèÁ.3) |
#2
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ã¤Ã ¤Ô´ÇèÒ à·¾ µÃÕ⡳ à຺ÇèÒà«Õ¹¨Ô§ ¢Í m ÁÒààÍ´
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#3
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¡çàÃÒá·¹¤èÒ sin30 , cos30 , tan30 ŧ令ÃѺ
ä´é¤èÒ¤×Í $\frac{1}{2}+\frac{\sqrt{3}}{2}+\frac{1}{\sqrt{3}}$ |
#4
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¡çá·¹¤èÒÊÔ¤ÃѺ
$sin30=\frac{1}{2}$ $cos30=\frac{\sqrt{3}}{2}$ $tan30=\frac{1}{\sqrt{3}}$ so $sin30+cos30+tan30=\frac{1}{2}+\frac{\sqrt{3}}{2}+\frac{1}{\sqrt{3}}$
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||!<<<<iNesZaii>>>>!||
17 ¡ØÁÀҾѹ¸ì 2009 18:11 : ¢éͤÇÒÁ¹Õé¶Ù¡á¡éä¢áÅéÇ 1 ¤ÃÑé§, ¤ÃÑé§ÅèÒÊØ´â´Â¤Ø³ Ne[S]zA |
#5
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µÍº $\frac{5\sqrt{3}+3 }{6}$ ãªè»èФÃѺ
(¶ÒÁà¼×èͤԴàÅ¢¼Ô´)
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¤Ø³ÍÒ¨¨Ð¤é¹¾ºÊØ´»ÅÒ¨ѡÃÇÒÅ áµè¤Ø³ÂѧäÁè¤é¹¾º 3 cm.·Õè˹éÒÍ¡´éÒ¹«éÒÂã¹µÑǤسàÅ 17 ¡ØÁÀҾѹ¸ì 2009 19:46 : ¢éͤÇÒÁ¹Õé¶Ù¡á¡éä¢áÅéÇ 1 ¤ÃÑé§, ¤ÃÑé§ÅèÒÊØ´â´Â¤Ø³ SiR ZigZag NeaRton |
#6
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¶Ù¡ÅФÃѺ
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#7
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ÃÙéÊÖ¡¨Ð¼Ô´ËÁ´¹Ð¤ÃѺ
$sin30 \not= sin30^ð$ 17 ¡ØÁÀҾѹ¸ì 2009 20:31 : ¢éͤÇÒÁ¹Õé¶Ù¡á¡éä¢áÅéÇ 1 ¤ÃÑé§, ¤ÃÑé§ÅèÒÊØ´â´Â¤Ø³ [SIL] |
#8
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àÍèÍ....¤§äÁèä´éãÊèͧÈÒŧä»ÍèФÃѺ â·É·Õ¤ÃѺ
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||!<<<<iNesZaii>>>>!||
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#9
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¶éÒ¹éͧ¨ÓäÁèä´éÇèÒ¤èÒà·èÒäËÃè ŧÁ×ÍËÑ¡¹ÔéÇâÅ´ à´ÕëÂÇ¡çä´éàͧ(·Ó»ÃШÓ)
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Í´Õµ¤×ÍÀÒ¾¾¨¹ì ͹Ҥµ¤×ͤÇÒÁ½Ñ¹ »Ñ¨¨ØºÑ¹¤×ͤÇÒÁ¨ÃÔ§ |
#10
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¼Á¡çäÁè¤èÍÂÃÙéà·èÒäÃËÃÍ¡¤ÃѺ áµè¶éÒʧÊÑ¡çÁÒ·Õè kheerae@hotmail.com ä´éàŤÃѺ ¶éҵͺäÁèä´é¡ç¨Ð¾ÂÒÂÒÁËÒÁÒãËé¹Ð¤ÃѺ
ÍëÍÍÕ¡ÍÂèҧ˹Öè§Å×Á·Ñ¡·ÒÂÍÒ¨ÒÃÂìµÑÇàͧ·Õèà¤ÂàÃÕ¹µÍ¹ Á.µé¹¹Ð¤ÃѺ ÍÒ¨ÒÃÂ줹¹Õéà¢ÒÊ͹·Ñ駼ÁáÅСç¾Õè¢Í§¼Á´éǤÃѺ à¡×ͺÅ×Á ÊÇÑÊ´Õ¤ÃѺ ÍÒ¨ÒÃÂì (¤¹ÃÑ¡¤³Ôµ) ʺÒ´ÕäËÁ¤ÃѺ
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"äÁèÁÕÍÐäôÕ仡ÇèÒ¡Ò÷Õèä´éµ×è¹¢Öé¹ÁÒÍÕ¡Çѹ" ¼Áàª×èÍã¹»Ò¯ÔËÒÃÂìáµè¼ÁäÁèàª×èÍÇèÒ»Ò¯ÔËÒÃÂì¨Ðà¡Ô´¢Ö鹶éÒ¼ÁäÁè·Ó 05 ÁÕ¹Ò¤Á 2009 12:35 : ¢éͤÇÒÁ¹Õé¶Ù¡á¡éä¢áÅéÇ 1 ¤ÃÑé§, ¤ÃÑé§ÅèÒÊØ´â´Â¤Ø³ nongtum à˵ؼÅ: double post |
#11
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sin30 ¤×ÍÍÐäÃÍèÒ
§§ äÁèà¤Âà¨Í ã¤ÃÃÙéªèÇÂ͸ԺÒÂ˹èͤѺ
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Did you know that those who appear to be very strong in heart are real weak and most susceptible? |
#12
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ÍéÒ§ÍÔ§:
àÃÒà»ç¹à´ç¡»ÃжÁ ¸ÃÃÁ´Òæ äÁèà¤ÂÊ͹ã¤ÃàÅÂ
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#13
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¤Ø³ ¤usÑ¡¤³Ôm à»ç¹à´ç¡»ÃжÁËÃͤÃѺ
à»ç¹à´ç¡·Õèã½èÃÙéÁÒ¡àÅ ^_^
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Do math, do everything. |
#14
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1). ä«¹ì ¢Í§ÁØÁ ¤×Í ÍѵÃÒÊèǹ¢Í§¤ÇÒÁÂÒÇ´éÒ¹µÃ§¢éÒÁ µèͤÇÒÁÂÒÇ´éÒ¹µÃ§¢éÒÁÁØÁ©Ò¡ ã¹·Õè¹Õé¤×Í sin(A) = ¢éÒÁ/©Ò¡ = a/h 2). â¤ä«¹ì ¢Í§ÁØÁ ¤×Í ÍѵÃÒÊèǹ¢Í§¤ÇÒÁÂÒÇ´éÒ¹»ÃЪԴ µèͤÇÒÁÂÒÇ´éÒ¹µÃ§¢éÒÁÁØÁ©Ò¡ ã¹·Õè¹Õé¤×Í cos(A) = ªÔ´/©Ò¡ = b/h 3). ᷹ਹµì ¢Í§ÁØÁ ¤×Í ÍѵÃÒÊèǹ¢Í§¤ÇÒÁÂÒÇ´éÒ¹µÃ§¢éÒÁ µèͤÇÒÁÂÒÇ´éÒ¹»ÃЪԴ ã¹·Õè¹Õé¤×Í tan(A) = ¢éÒÁ/ªÔ´ = a/b 4). ⤫Õ᤹µì csc(A) ¤×Ϳѧ¡ìªÑ¹¼¡¼Ñ¹¡Òäٳ¢Í§ sin(A) ¹Ñ蹤×Í ÍѵÃÒÊèǹ¢Í§¤ÇÒÁÂÒÇ´éÒ¹µÃ§¢éÒÁÁØÁ©Ò¡ µèͤÇÒÁÂÒÇ´éÒ¹µÃ§¢éÒÁ csc(A) = ©Ò¡/¢éÒÁ = h/a 5). «Õ᤹µì sec(A) ¤×Ϳѧ¡ìªÑ¹¼¡¼Ñ¹¡Òäٳ¢Í§ cos(A) ¹Ñ蹤×Í ÍѵÃÒÊèǹ¢Í§¤ÇÒÁÂÒÇ´éÒ¹µÃ§¢éÒÁÁØÁ©Ò¡ µèͤÇÒÁÂÒÇ´éÒ¹»ÃЪԴ sec(A) = ©Ò¡/ªÔ´ = h/b 6). â¤á·¹à¨¹µì cot(A) ¤×Ϳѧ¡ìªÑ¹¼¡¼Ñ¹¡Òäٳ¢Í§ tan(A) ¹Ñ蹤×Í ÍѵÃÒÊèǹ¢Í§¤ÇÒÁÂÒÇ´éÒ¹»ÃЪԴ µèͤÇÒÁÂÒÇ´éÒ¹µÃ§¢éÒÁ cot(A) = ªÔ´/¢éÒÁ = b/a ´Ùà¾ÔèÁ http://th.wikipedia.org/wiki/%E0%B8%...B8%95%E0%B8%B4 µÒÃÒ§µÃÕ⡳ ⪤´Õ¹Ð¤Ø³¾Õè seidon »Å.àÃÒÍÂÙè».5ÍèÐ :P
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#15
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¤Ø³SILµéͧ¡ÒÃÊ×èÍÇèÒ àÇÅÒà¢Õ¹µÑÇàÅ¢ ãËéÃкØ˹èÇ´éÇÂ
à¾ÃÒÐ˹èÇÂÁÕ·Ñé§Í§ÈÒáÅÐàÃà´ÕÂÅ ¶éÒÁØÁà»ç¹Í§ÈÒ ¡ç¾ÂÒÂÒÁÃкØÇèÒà»ç¹Í§ÈÒ àªè¹ $sin30^0$ à¢Õ¹ãËéªÔ¹Á×Í àÇÅÒàÃÕ¹ÊÙ§¢Ö鹨Ðä´éäÁè¾ÅÒ´
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ÁÒËÒ¤ÇÒÁÃÙéäÇéµÔÇËÅÒ¹ áµèËÅÒ¹äÁèàÍÒàÅ¢áÅéÇ à¢éÒÁÒ·ÓàÅ¢àÍÒÁѹÍÂèÒ§à´ÕÂÇ ¤ÇÒÁÃÙéà»ç¹ÊÔè§à´ÕÂÇ·ÕèÂÔè§ãËé ÂÔè§ÁÕÁÒ¡ ÃÙéÍÐäÃäÁèÊÙé ÃÙé¨Ñ¡¾Í (¡àÇ鹤ÇÒÁÃÙé äÁèµéͧ¾Í¡çä´é ËÒäÇéÁÒ¡æáËÅдÕ) (áµè¡çÍÂèÒãËéÁÒ¡¨¹·èÇÁËÑÇ àÍÒµÑÇäÁèÃÍ´) |
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