Èç¹ûÈý½ÇÐÎÓÐÒ»±ßÉϵÄÖÐÏß³¤Ç¡ºÃµÈÓÚÕâ±ßµÄ³¤£¬ÄÇô³ÆÕâ¸öÈý½ÇÐÎΪ¡°ºÃÍæÈý½ÇÐΡ±
£¨1£©ÇëÓÃÖ±³ßÓëÔ²¹æ»Ò»¸ö¡°ºÃÍæÈý½ÇÐΡ±£»
£¨2£©Èçͼ1£¬ÔÚRt¡÷ABCÖУ¬¡ÏC=90¡ã£¬£¬ÇóÖ¤£º¡÷ABCÊÇ¡°ºÃÍæÈý½ÇÐΡ±£»
£¨3£©Èçͼ2£¬ÒÑÖªÁâÐÎABCDµÄ±ß³¤Îªa, ¡ÏABC=2¦Â£¬µãP£¬Q´ÓµãAͬʱ³ö·¢£¬ÒÔÏàͬµÄËٶȷֱðÑØÕÛÏßAB£BCºÍAD£DCÏòÖÕµãCÔ˶¯£¬¼ÇµãPËù¾¹ýµÄ·³ÌΪs
¢Ùµ±¦Â=45¡ãʱ£¬Èô¡÷APQÊÇ¡°ºÃÍæÈý½ÇÐΡ±£¬ÊÔÇóµÄÖµ£»
¢Úµ±tan¦ÂµÄÈ¡ÖµÔÚʲô·¶Î§ÄÚ£¬µãP£¬QÔÚÔ˶¯¹ý³ÌÖУ¬ÓÐÇÒÖ»ÓÐÒ»¸ö¡÷APQÄܳÉΪ¡°ºÃÍæÈý½ÇÐΡ±£¿ÇëÖ±½Óд³ötan¦ÂµÄÈ¡Öµ·¶Î§¡£
£¨4£©±¾Ð¡ÌâΪѡ×öÌâ
ÒÀ¾Ý£¨3£©ÖеÄÌõ¼þ£¬Ìá³öÒ»¸ö¹ØÓÚ¡°ÔÚµãP£¬QµÄÔ˶¯¹ý³ÌÖУ¬tan¦ÂµÄÈ¡Öµ·¶Î§Óë¡÷APQÊÇ¡°ºÃÍæÈý½ÇÐΡ±µÄ¸öÊý¹Øϵ¡±µÄÕæÃüÌ⣨¡°ºÃÍæÈý½ÇÐΡ±µÄ¸öÊýÏÞ¶¨²»ÄÜΪ1£©¡£
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¿£º³õÖÐÊýѧ À´Ô´£º ÌâÐÍ£º
| ||
2 |
a |
s |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£º2013ÄêÕã½Ê¡Ì¨ÖÝÊи߼¶ÖеÈѧУÕÐÉú¿¼ÊÔÊýѧ ÌâÐÍ£º044
Èç¹ûÈý½ÇÐÎÓÐÒ»±ßÉϵÄÖÐÏß³¤Ç¡ºÃµÈÓÚÕâ±ßµÄ³¤£¬ÄÇô³ÆÕâ¸öÈý½ÇÐÎΪ¡°ºÃÍæÈý½ÇÐΡ±
(1)ÇëÓÃÖ±³ßÓëÔ²¹æ»Ò»¸ö¡°ºÃÍæÈý½ÇÐΡ±£»
(2)Èçͼ1£¬ÔÚRt¡÷ABCÖУ¬¡ÏC£½90¡ã£¬£¬ÇóÖ¤£º¡÷ABCÊÇ¡°ºÃÍæÈý½ÇÐΡ±£»
(3)Èçͼ2£¬ÒÑÖªÁâÐÎABCDµÄ±ß³¤Îªa£¬¡ÏABC£½2¦Â£¬µãP£¬Q´ÓµãAͬʱ³ö·¢£¬ÒÔÏàͬµÄËٶȷֱðÑØÕÛÏßAB£BCºÍAD£DCÏòÖÕµãCÔ˶¯£¬¼ÇµãPËù¾¹ýµÄ·³ÌΪS
¢Ùµ±¦Â£½45¡ãʱ£¬Èô¡÷APQÊÇ¡°ºÃÍæÈý½ÇÐΡ±£¬ÊÔÇóµÄÖµ
¢Úµ±tan¦ÂµÄÈ¡ÖµÔÚʲô·¶Î§ÄÚ£¬µãP£¬QÔÚÔ˶¯¹ý³ÌÖУ¬ÓÐÇÒÖ»ÓÐÒ»¸ö¡÷APQÄܳÉΪ¡°ºÃÍæÈý½ÇÐΡ±ÇëÖ±½Óд³ötan¦ÂµÄÈ¡Öµ·¶Î§£®
(4)±¾Ð¡ÌâΪѡ×öÌâ
ÒÀ¾Ý(3)ÖеÄÌõ¼þ£¬Ìá³öÒ»¸ö¹ØÓÚ¡°ÔÚµãP£¬QµÄÔ˶¯¹ý³ÌÖУ¬tan¦ÂµÄÈ¡Öµ·¶Î§Óë¡÷APQÊÇ¡°ºÃÍæÈý½ÇÐΡ±µÄ¸öÊý¹ØϵµÄÕæÃüÌâ(¡°ºÃÍæÈý½ÇÐΡ±µÄ¸öÊýÏÞ¶¨²»ÄÜΪ1)£®
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£º2013Äê³õÖбÏÒµÉýѧ¿¼ÊÔ£¨Õã½Ì¨ÖÝ¾í£©Êýѧ£¨½âÎö°æ£© ÌâÐÍ£º½â´ðÌâ
Èç¹ûÈý½ÇÐÎÓÐÒ»±ßÉϵÄÖÐÏß³¤Ç¡ºÃµÈÓÚÕâ±ßµÄ³¤£¬ÄÇô³ÆÕâ¸öÈý½ÇÐÎΪ¡°ºÃÍæÈý½ÇÐΡ±
£¨1£©ÇëÓÃÖ±³ßÓëÔ²¹æ»Ò»¸ö¡°ºÃÍæÈý½ÇÐΡ±£»
£¨2£©Èçͼ1£¬ÔÚRt¡÷ABCÖУ¬¡ÏC=90¡ã£¬£¬ÇóÖ¤£º¡÷ABCÊÇ¡°ºÃÍæÈý½ÇÐΡ±£»
£¨3£©Èçͼ2£¬ÒÑÖªÁâÐÎABCDµÄ±ß³¤Îªa, ¡ÏABC=2¦Â£¬µãP£¬Q´ÓµãAͬʱ³ö·¢£¬ÒÔÏàͬµÄËٶȷֱðÑØÕÛÏßAB£BCºÍAD£DCÏòÖÕµãCÔ˶¯£¬¼ÇµãPËù¾¹ýµÄ·³ÌΪs
¢Ùµ±¦Â=45¡ãʱ£¬Èô¡÷APQÊÇ¡°ºÃÍæÈý½ÇÐΡ±£¬ÊÔÇóµÄÖµ£»
¢Úµ±tan¦ÂµÄÈ¡ÖµÔÚʲô·¶Î§ÄÚ£¬µãP£¬QÔÚÔ˶¯¹ý³ÌÖУ¬ÓÐÇÒÖ»ÓÐÒ»¸ö¡÷APQÄܳÉΪ¡°ºÃÍæÈý½ÇÐΡ±£¿ÇëÖ±½Óд³ötan¦ÂµÄÈ¡Öµ·¶Î§¡£
£¨4£©±¾Ð¡ÌâΪѡ×öÌâ
ÒÀ¾Ý£¨3£©ÖеÄÌõ¼þ£¬Ìá³öÒ»¸ö¹ØÓÚ¡°ÔÚµãP£¬QµÄÔ˶¯¹ý³ÌÖУ¬tan¦ÂµÄÈ¡Öµ·¶Î§Óë¡÷APQÊÇ¡°ºÃÍæÈý½ÇÐΡ±µÄ¸öÊý¹Øϵ¡±µÄÕæÃüÌ⣨¡°ºÃÍæÈý½ÇÐΡ±µÄ¸öÊýÏÞ¶¨²»ÄÜΪ1£©¡£
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£º2013ÄêÕã½Ê¡Ì¨ÖÝÊÐÖп¼ÊýѧÊÔ¾í£¨½âÎö°æ£© ÌâÐÍ£º½â´ðÌâ
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