ʵÑéʱ£¬ÏȽ«²£Á§×©·Åµ½°×Ö½ÉÏ£¬Ê¹ÉÏÊöÁ½¸öÏ໥ƽÐеıíÃæÓëÖ½Ãæ´¹Ö±.ÔÚÖ½ÉÏ»³öÖ±Ïßaa¡äºÍbb¡ä£¬aa¡ä±íʾ¶ÆÒøµÄ²£Á§±íÃ棬bb¡ä±íʾÁíÒ»±íÃ棬Èçͼ5-4-4Ëùʾ.È»ºó£¬ÔÚ°×Ö½ÉÏÊúÖ±²åÉÏÁ½Ã¶´óÍ·ÕëP1¡¢P2£¨Î»ÖÃÈçͼ£©.ÓÃP1¡¢P2µÄÁ¬Ïß±íʾÈëÉä¹âÏß.
ͼ5-4-4
i.ΪÁ˲âÁ¿ÕÛÉäÂÊ£¬Ó¦ÈçºÎÕýȷʹÓôóÍ·ÕëP3¡¢P4£¿
ÊÔÔÚÌâͼÖбê³öP3¡¢P4µÄλÖÃ.
ii.È»ºó£¬ÒÆÈ¥²£Á§×©Óë´óÍ·Õë.ÊÔÔÚÌâͼÖÐͨ¹ý×÷ͼµÄ·½·¨±ê³ö¹âÏß´Ó¿ÕÆøµ½²£Á§ÖеÄÈëÉä½Ç¦È1ÓëÕÛÉä½Ç¦È2.¼òҪд³ö×÷ͼ²½Öè.
iii.д³öÓæÈ1¡¢¦È2±íʾµÄÕÛÉäÂʹ«Ê½Îªn=_____________.
½âÎö£º±¾ÊµÑéÓë½Ì²ÄÖС°²â²£Á§×©ÕÛÉäÂÊ¡±ÊµÑé±È½Ï£¬Æ÷²Ä·¢ÉúÁ˱仯£¬²£Á§×©ÓÉÁ½¸ö͸¹â±íÃ棬±ä³ÉÁËÒ»¸ö͸¹â£¬Ò»¸ö·´Éä¹â.¸ù¾Ý·´É䶨ÂÉ¡¢ÕÛÉ䶨ÂÉÖª£¬ÎïÌå·¢ÉúµÄ¹â¾²£Á§×©ºóµÄ¹â·Èçͼ5-4-5£¬Óë½Ì²ÄʵÑéÔÀí¡¢·½·¨Àà±È£¬ÎÒÃÇÖªµÀÒª²â¶¨²£Á§×©µÄÕÛÉäÂÊ£¬ÐëÈ·¶¨½øÈëשµÄÕÛÉä¹âÏß¼´È·¶¨·´ÉäµãN.½èÓá°²åÕë·¨¡±¿ÉÈ·¶¨³öÉä¹âÏߣ¬³öÉäµãO¡ä£¬ÀûÓõãNÔÚµãOO¡äÖ±ÏßµÄÖÐÖØÏßÉÏ¿ÉÈ·¶¨Nµã£¬½ø¶øµÃµ½ÈëÉä½Ç¦È1ÓëÕÛÉä½Ç¦È2£¬ÔòÕÛÉäÂÊn=.
ͼ5-4-5
´ð°¸£ºi.ÔÚbb¡äÒ»²à¹Û²ìP1¡¢P2£¨¾¹ýbb¡äÕÛÉäaa¡ä·´É䣬ÔÙ¾bb¡äÕÛÉäºó£©µÄÏñ£¬ÔÚÊʵ±µÄλÖòåÉÏP3£¬Ê¹µÃP3ÓëP1¡¢P2µÄÏñÔÚÒ»ÌõÖ±ÏßÉÏ£¬¼´ÈÃP3µ²×¡P1¡¢P2µÄÏñ£»ÔÙ²åÉÏP4£¬ÈÃËüµ²×¡P3£¨»òP1£©µÄÏñºÍP3.P3¡¢P4µÄλÖÃÈçͼ.
ii.¢Ù¹ýP1¡¢P2×÷Ö±ÏßÓëbb¡ä½»ÓÚO£»
¢Ú¹ýP3¡¢P4×÷Ö±ÏßÓëbb¡ä½»ÓÚO¡ä£»
¢ÛÀûÓÿ̶ȳßÕÒµ½OO¡äµÄÖеãM£»
¢Ü¹ýOµã×÷bb¡äµÄ´¹ÏßCD£¬¹ýMµã×÷bb¡äµÄ´¹ÏßÓëaa¡äÏཻÓÚN£¬ÈçͼËùʾ£¬Á¬½ÓON£»
¢Ý¡ÏP1OD=¦È1£¬¡ÏCON=¦È2.
iii.n=sin¦È1/sin¦È2.
Ä꼶 | ¸ßÖÐ¿Î³Ì | Ä꼶 | ³õÖÐ¿Î³Ì |
¸ßÒ» | ¸ßÒ»Ãâ·Ñ¿Î³ÌÍƼö£¡ | ³õÒ» | ³õÒ»Ãâ·Ñ¿Î³ÌÍƼö£¡ |
¸ß¶þ | ¸ß¶þÃâ·Ñ¿Î³ÌÍƼö£¡ | ³õ¶þ | ³õ¶þÃâ·Ñ¿Î³ÌÍƼö£¡ |
¸ßÈý | ¸ßÈýÃâ·Ñ¿Î³ÌÍƼö£¡ | ³õÈý | ³õÈýÃâ·Ñ¿Î³ÌÍƼö£¡ |
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º
Ò»¿é²£Á§×©ÓÐÁ½¸öÏ໥ƽÐеıíÃ棬ÆäÖÐÒ»¸ö±íÃæÊǶÆÒøµÄ£¨¹âÏß²»ÄÜͨ¹ý±íÃ棩.ÏÖÒª²â¶¨´Ë²£Á§µÄÕÛÉäÂÊ.¸ø¶¨µÄÆ÷²Ä»¹ÓУº°×Ö½¡¢Ç¦±Ê¡¢´óÍ·Õë4ö£¨P1¡¢P2¡¢P3¡¢P4£©¡¢´øÓп̶ȵÄÖ±½ÇÈý½Ç°å¡¢Á¿½ÇÆ÷.
ʵÑéʱ£¬ÏȽ«²£Á§×©·Åµ½°×Ö½ÉÏ£¬Ê¹ÉÏÊöÁ½¸öÏ໥ƽÐеıíÃæÓëÖ½Ãæ´¹Ö±.ÔÚÖ½ÉÏ»³öÖ±Ïßaa¡äºÍbb¡ä£¬aa¡ä±íʾ¶ÆÒøµÄ²£Á§±íÃ棬bb¡ä±íʾÁíÒ»±íÃ棬ÈçͼËùʾ.È»ºó£¬ÔÚ°×Ö½ÉÏÊúÖ±²åÉÏÁ½Ã¶´óÍ·ÕëP1¡¢P2£¨Î»ÖÃÈçͼ13-1-21£©.ÓÃP1¡¢P2µÄÁ¬Ïß±íʾÈëÉä¹âÏß.
ͼ13-1-21
£¨1£©ÎªÁ˲âÁ¿ÕÛÉäÂÊ£¬Ó¦ÈçºÎÕýȷʹÓôóÍ·ÕëP3¡¢P4£¿
______________________________________________________________________________.
ÊÔÔÚÌâͼÖбê³öP3¡¢P4µÄλÖÃ.
£¨2£©È»ºó£¬ÒÆÈ¥²£Á§×©Óë´óÍ·Õë.ÊÔÔÚÌâͼÖÐͨ¹ý×÷ͼµÄ·½·¨±ê³ö¹âÏß´Ó¿ÕÆøµ½²£Á§ÖеÄÈëÉä½Ç¦È1ÓëÕÛÉä½Ç¦È2.¼òҪд³ö×÷ͼ²½Öè.
_____________________________________________________________________________________________________________________________________________________________.
£¨3£©Ð´³ö¦È1¡¢¦È2±íʾµÄÕÛÉäÂʹ«Ê½Îªn=______________________.
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º
Ò»¿é²£Á§×©ÓÐÁ½¸öÏ໥ƽÐеıíÃ棬ÆäÖÐÒ»¸ö±íÃæÊǶÆÒø
µÄ(¹âÏß²»ÄÜͨ¹ý´Ë±íÃæ)£®ÏÖÒª²â¶¨´Ë²£Á§µÄÕÛÉäÂÊ£®¸ø
¶¨µÄÆ÷²Ä»¹ÓУº°×Ö½¡¢Ç¦±Ê¡¢´óÍ·Õë4ö(P1¡¢P2¡¢P3¡¢P4)¡¢
´øÓп̶ȵÄÖ±½ÇÈý½Ç°å¡¢Á¿½ÇÆ÷£®
ʵÑéʱ£¬ÏȽ«²£Á§×©·Åµ½°×Ö½ÉÏ£¬Ê¹ÉÏÊöÁ½¸öÏ໥ƽÐеÄ
±íÃæÓëÖ½Ãæ´¹Ö±£®ÔÚÖ½ÉÏ»³öÖ±Ïßaa¡äºÍbb¡ä£¬aa¡ä±íʾ¶ÆÒøµÄ²£Á§±íÃ棬bb¡ä±í
ʾÁíÒ»±íÃ棬Èçͼʵ£1£9Ëùʾ£®È»ºó£¬ÔÚ°×Ö½ÉÏÊúÖ±²åÉÏÁ½Ã¶´óÍ·ÕëP1¡¢P2(λÖÃ
Èçͼ)£®ÓÃP1¡¢P2µÄÁ¬Ïß±íʾÈëÉä¹âÏߣ®
(1)ΪÁ˲âÁ¿ÕÛÉäÂÊ£¬Ó¦ÈçºÎÕýȷʹÓôóÍ·ÕëP3¡¢P4?
________________________________________________________________________
________________________________________________________________________.
(ÊÔÔÚͼʵ£1£9Öбê³öP3¡¢P4µÄλÖÃ)
(2)È»ºóÒÆÈ¥²£Á§×©Óë´óÍ·Õ룮ÊÔÔÚͼʵ£1£9ÖÐͨ¹ý×÷ͼµÄ·½·¨±ê³ö¹âÏß´Ó¿ÕÆøµ½
²£Á§ÖеÄÈëÉä½Ç¦È1ÓëÕÛÉä½Ç¦È2.¼òҪд³ö×÷ͼ²½Ö裮
________________________________________________________________________
________________________________________________________________________.
(3)д³öÓæÈ1¡¢¦È2±íʾµÄÕÛÉäÂʹ«Ê½Îªn£½________.
¡¾½âÎö¡¿£º(1)ÔÚbb¡äÒ»²à¹Û²ìP1¡¢P2(¾bb¡äÕÛÉä¡¢aa¡ä·´É䣬ÔÙ¾bb¡äÕÛÉäºó)µÄÏñ£¬
ÔÚÊʵ±µÄλÖòåÉÏP3£¬Ê¹µÃP3ÓëP1¡¢P2µÄÏñÔÚÒ»ÌõÖ±ÏßÉÏ£¬¼´ÈÃP3µ²×¡P1¡¢P2µÄ
Ïñ£»ÔÙ²åÉÏP4£¬ÈÃËüµ²×¡P2¼°P1µÄÏñºÍP3.P3¡¢P4µÄλÖÃÈçͼËùʾ£®
(2)¢Ù¹ýP1¡¢P2×÷Ö±ÏßÓëbb¡ä½»ÓÚO£»
¢Ú¹ýP3¡¢P4×÷Ö±ÏßÓëbb¡ä½»ÓÚO¡ä£»
¢ÛÀûÓÿ̶ȳßÕÒµ½OO¡äµÄÖеãM£»
¢Ü¹ýOµã×÷bb¡äµÄ´¹ÏßCD£¬¹ýMµã×÷bb¡äµÄ´¹ÏßÓëaa¡äÏཻÓÚN£¬ÈçͼËùʾ£¬
Á¬½ÓON£»
¢Ý¡ÏP1OD£½¦È1£¬¡ÏCON£½¦È2.
(3)ÓÉÕÛÉäÂʵĶ¨Òå¿ÉµÃn£½.
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2012½ìÈ˽̰æ¸ßÈýÎïÀí²â¶¨²£Á§ÕÛÉäÂÊרÏîѵÁ· ÌâÐÍ£ºÑ¡ÔñÌâ
Ò»¿é²£Á§×©ÓÐÁ½¸öÏ໥ƽÐеıíÃ棬ÆäÖÐÒ»¸ö±íÃæÊǶÆÒø
µÄ(¹âÏß²»ÄÜͨ¹ý´Ë±íÃæ)£®ÏÖÒª²â¶¨´Ë²£Á§µÄÕÛÉäÂÊ£®¸ø
¶¨µÄÆ÷²Ä»¹ÓУº°×Ö½¡¢Ç¦±Ê¡¢´óÍ·Õë4ö(P1¡¢P2¡¢P3¡¢P4)¡¢
´øÓп̶ȵÄÖ±½ÇÈý½Ç°å¡¢Á¿½ÇÆ÷£®
ʵÑéʱ£¬ÏȽ«²£Á§×©·Åµ½°×Ö½ÉÏ£¬Ê¹ÉÏÊöÁ½¸öÏ໥ƽÐеÄ
±íÃæÓëÖ½Ãæ´¹Ö±£®ÔÚÖ½ÉÏ»³öÖ±Ïßaa¡äºÍbb¡ä£¬aa¡ä±íʾ¶ÆÒøµÄ²£Á§±íÃ棬bb¡ä±í
ʾÁíÒ»±íÃ棬Èçͼʵ£1£9Ëùʾ£®È»ºó£¬ÔÚ°×Ö½ÉÏÊúÖ±²åÉÏÁ½Ã¶´óÍ·ÕëP1¡¢P2(λÖÃ
Èçͼ)£®ÓÃP1¡¢P2µÄÁ¬Ïß±íʾÈëÉä¹âÏߣ®
(1)ΪÁ˲âÁ¿ÕÛÉäÂÊ£¬Ó¦ÈçºÎÕýȷʹÓôóÍ·ÕëP3¡¢P4?
________________________________________________________________________
________________________________________________________________________.
(ÊÔÔÚͼʵ£1£9Öбê³öP3¡¢P4µÄλÖÃ)
(2)È»ºóÒÆÈ¥²£Á§×©Óë´óÍ·Õ룮ÊÔÔÚͼʵ£1£9ÖÐͨ¹ý×÷ͼµÄ·½·¨±ê³ö¹âÏß´Ó¿ÕÆøµ½
²£Á§ÖеÄÈëÉä½Ç¦È1ÓëÕÛÉä½Ç¦È2.¼òҪд³ö×÷ͼ²½Ö裮
________________________________________________________________________
________________________________________________________________________.
(3)д³öÓæÈ1¡¢¦È2±íʾµÄÕÛÉäÂʹ«Ê½Îªn£½________.
¡¾½âÎö¡¿£º(1)ÔÚbb¡äÒ»²à¹Û²ìP1¡¢P2(¾bb¡äÕÛÉä¡¢aa¡ä·´É䣬ÔÙ¾bb¡äÕÛÉäºó)µÄÏñ£¬
ÔÚÊʵ±µÄλÖòåÉÏP3£¬Ê¹µÃP3ÓëP1¡¢P2µÄÏñÔÚÒ»ÌõÖ±ÏßÉÏ£¬¼´ÈÃP3µ²×¡P1¡¢P2µÄ
Ïñ£»ÔÙ²åÉÏP4£¬ÈÃËüµ²×¡P2¼°P1µÄÏñºÍP3.P3¡¢P4µÄλÖÃÈçͼËùʾ£®
(2)¢Ù¹ýP1¡¢P2×÷Ö±ÏßÓëbb¡ä½»ÓÚO£»
¢Ú¹ýP3¡¢P4×÷Ö±ÏßÓëbb¡ä½»ÓÚO¡ä£»
¢ÛÀûÓÿ̶ȳßÕÒµ½OO¡äµÄÖеãM£»
¢Ü¹ýOµã×÷bb¡äµÄ´¹ÏßCD£¬¹ýMµã×÷bb¡äµÄ´¹ÏßÓëaa¡äÏཻÓÚN£¬ÈçͼËùʾ£¬
Á¬½ÓON£»
¢Ý¡ÏP1OD£½¦È1£¬¡ÏCON£½¦È2.
(3)ÓÉÕÛÉäÂʵĶ¨Òå¿ÉµÃn£½.
²é¿´´ð°¸ºÍ½âÎö>>
°Ù¶ÈÖÂÐÅ - Á·Ï°²áÁбí - ÊÔÌâÁбí
ºþ±±Ê¡»¥ÁªÍøÎ¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨Æ½Ì¨ | ÍøÉÏÓк¦ÐÅÏ¢¾Ù±¨×¨Çø | µçÐÅթƾٱ¨×¨Çø | ÉæÀúÊ·ÐéÎÞÖ÷ÒåÓк¦ÐÅÏ¢¾Ù±¨×¨Çø | ÉæÆóÇÖȨ¾Ù±¨×¨Çø
Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com