·µ»Ø

ÈËÔÚ¸ßÎä²ÈÌõ³æ£¬ÏµÍ³ËµÎÒÔÚÍÀÁú

Ê×Ò³
¹ØµÆ
»¤ÑÛ
×ÖÌ壺
´ó
ÖÐ
С
µÚ17Õ »ùÓÑã±ƣ¬Äã¾ÍÊÇÄÇλcosÄУ¿(1/2)
   ´æÊéÇ© Êé¼Ü¹ÜÀí ·µ»ØÄ¿Â¼
    µÚ17Õ  »ùÓÑã±ƣ¬Äã¾ÍÊÇÄÇλcosÄУ¿

    ¶øÒ»ÅÔËÕÀëÔç¾ÍɵÑÛÁË¡£

    ÎÔ²Û£¡

    ²»ÊÇ£¬ÄãÄܲ»ÄÜÕý³£Ò»µã£¬±ðÕûÄÇËÀ¶¯¾²£¿

    Õâ²èÀï²èÆøµÄ»°£¬ÄãÊÇÔõô˵µÃ³ö¿ÚµÄ£¿

    ËûÓÐЩÒÉ»óµÄÉÏÏÂ×Ðϸ´òÁ¿ÁËĽÇàÄûÒ»±é¡£

    ²ÅÒ»Ìì²»¼û¡£

    ÕâС椶ùÕâô±ä³ÉÕâÄ£ÑùÁË£¿

    ¿´³öÀ´ËÕÀëÓÐЩ³Ô±ñºó£¬Ä½ÇàÄûÈ̲»×¡Ãò×ìһϣ¬ÄÚÐÄÒ²ÓÐЩСȸԾ¡£

    ºÜºÃ£¡

    ×Ô¼º×ÜËãÊÇ°â»ØÒ»³ÇÁË£¡

    ×òÍíÄÇЩ¶«Î÷¹ûÈ»ÓÐЧ£¬×Ô¼º»ØÈ¥Ö®ºóµÃÔٺúÿ´¿´¡£

    Õâʱ£¬Ôں󷽿´µ½ÕâһϵÄÅíÌìÐÏ£¬Ò²×ßÁ˹ýÀ´¡£

    ¡°ÇàÄû£¬ÕâÊÇÄãÐÂÈÏʶµÄÅóÓÑÂð£¬Ôõô²»¸øÎÒ½éÉÜһϣ¿¡±

    ÅíÌìÐϵ÷Ц×Å¿ª¿Ú˵µÀ¡£

    ËµÊµ»°£¡

    ¸Õ²ÅËûÔÚºóÃæ¿´¼ûĽÇàÄûºÍËÕÀë¶·×ìʱ£¬ÐÄÖпÉÊÇÏ൱¾ªÑȵġ£

    Æ½ÈÕÀï¡£

    Ä½ÇàÄûµÄÐÔ×ÓÀäµ­£¬ÓÐЩÄÚÏò¡£

    °²³ÇѲҹ˾ÄÚ£¬³ýÁË×Ô¼ººÍÔÆË¼ÔÂÖ®Í⣬¾ÍºÜÉÙÓÐÈËÄܸúĽÇàÄû´îÉÏ»°ÁË¡£

    Ëû¿É´Óû¼ûµ½Ä½ÇàÄûÖ÷¶¯¶ÔÒ»¸öİÉúÈËÕâÑù£¬¶øÇÒ¶Ô·½»¹ÊǸöÄк¢¡£

    ÕâÈÃÅíÌìÐ϶ÔËÕÀëºÜÊÇºÃÆæ¡£

    ¶øÌý¼ûÕâ»°µÄĽÇàÄû£¬Á³¼ÕÓÐЩ΢΢·ººì¡£

    Ôã¸â£¡

    ÍüÁËÅíÊåÊ廹ÔÚÕâÀïÁË¡£

    ×Ô¼º¸Õ²ÅÄÇ·¬ÑÔÓÆñ²»ÊǶ¼±»ÅíÌìÐϸøÌý¼ûÁË£¿

    Õâ϶ªÈ˶ª´ó·¢ÁË£¡

    Ä½ÇàÄûÐÄÖаµ×Ô°ÃÄÕ¡£

    ¶¼¹ÖËÕÀ룡

    Òª²»ÊÇÕâ¼Ò»ïÄĺø²»¿ªÌáÄĺø£¬×Ô¼ºÒ²²»»áÄÇÑù˵»°¡£

    ¡°ÅíÊåÊ壬Ëû¾ÍÊÇÎÒ¸øÄã˵µÄÄǸö¡­¡­ËÕÀë¡­¡±

    ¼òµ¥Æ½¸´ÐÄÇéºó£¬Ä½ÇàÄû¿ª¿Ú½éÉÜÁËÒ»ÏÂËÕÀë¡£

    ËýÏÖÔÚֻϣÍûÅíÌìÐÏ¿ìµã×ªÒÆÄ¿±ê£¬Íü¼Ç¸Õ¸ÕÄÇһĻ¡£

    ¡°Å¶£¿Õâ¾ÍÊÇËÕÀëͬѧ£¿¡±

    ÅíÌìÐÏÎÅÑÔÑÛÖÐÉÁ¹ýÒ»µÀ¾«¹â£¬ËæºóЦºÇºÇµÄ×ÔÎÒ½éÉÜÆðÀ´¡£

    ¡°ËÕÀëͬѧÄãºÃ£¡¡±

    ¡°ÎÒÊǰ²³ÇѲҹ˾µÄ˾³¤ÅíÌìÐÏ£¬ºÜ¸ßÐËÈÏʶÄãÕâÑùһλÇàÄê¿¡½Ü£¡¡±

    Ëµ×ÅËû»¹Ö÷¶¯Éì³öÓÒÊÖ¡£

    ¡°Åí˾³¤ÄãºÃ£¬ÎÒÒ²ºÜ¸ßÐËÄÜÈÏʶÄú£¡¡±

    ËÕÀë¼û×´Ò²Éì³ö×Ô¼ºÓÒÊÖ£¬ºÍ¶Ô·½ÎÕһϡ£

    ¶øÑîΰ´Ë¿Ìã±ÆÁË¡£

    ÍõµÂ·¢£¿£¡

    ÎÒ¸Õ¸ÕÌýµ½ÁËʲô£¿

    ÑÛǰÕâÆ½Æ½ÎÞÆæµÄÖÐÄê´óÊ壬¾ÓÈ»Êǰ²³ÇѲҹ˾µÄ˾³¤£¿

    Ëû¼¤¶¯µÄ»ëÉí¶¼ÔÚ·¢¶¶¡£

    ÎÔ²Û£¡£¡£¡

    ÎÒ¾ÓÈ»Ç×ÑÛ¼ûµ½ÕâÖÖ´óÈËÎïÁË£¿

    ÑîΰÄÇÎÕ×ű­×ÓµÄË«ÊÖ¶¼ÔÚ²»Í£²ü¶¶¡£

    ÒªÖªµÀ£¡

    Õâ¿ÉÊÇѲҹ˾µÄ˾³¤°¡£¡

    ÆÕͨѲҹÈ˶¼ÊÇÉñÁú¼ûÊײ»¼ûβµÄ´æÔÚ£¬Ò»°ãÈ˺ÜÄѼûµ½¡£

    ¸ü±ð˵ÑÛǰÕâ룬³¬ÍÑÓÚÆäËû¹Ù·½¹ÙÔ±µÄ˾³¤ÁË¡£

    ¶øÈÃÑîΰ×î²»ÄÜÀí½âµÄ¡£

    »¹µÃÊÇÅíÌìÐ϶ÔËÕÀëµÄ̬¶È¡£

    ¾ÓÈ»ÄÇôºÍ°ª¿ÉÇ×£¬ÍðÈçÁÚ¼Ò´óÊåÒ»°ã£¬ÍêȫûÓÐһ˾֮³¤µÄ¼Ü×Ó¡£

    ÊµÔÚÊÇÌ«²»¿É˼ÒéÁË£¡

    ×î×î×î¡­¡­

    ×îÖØÒªµÄÒ»µã£¡

    ËÕÀëÕâ¹·¶«Î÷Ãæ¶ÔѲҹ˾˾³¤£¬¾ÓÈ»±íÏÖµÄÄÇôµ­¶¨¡£

    ´ó¸ç£¡

    Õâ¿ÉÊÇѲҹ˾µÄ˾³¤°¡£¡

    ÄãÕâôµ­¶¨ÊDz»ÊÇÌ«²»×ðÖØÈËÁË£¿

    ÒªÊÇ»»×öËû¡£

    ±ð˵ÊÇÎÕÊÖÁË£¬¾ÍËãÊǵ±³¡¿ÄÒ»¸öҲû°ëµãÎÊÌâ¡£

    ¶øÅíÌìÐϽÓÏÂÀ´µÄÒ»¾ä»°£¬ÈÃÑîΰ³¹µ×¡°Õ¨ÁË¡±£¡

    Ö»¼ûË«·½ÎÕÍêÊÖºó£¬ÅíÌìÐϵ­Ð¦×ÅÎʵÀ£º¡°ËÕͬѧ£¬Ïë±ØÄã¾ÍÊÇÖÚÈË¿ÚÖеÄÄÇλ¡­¡­cosÄаɣ¿¡±

    ÔÚÑîΰÄÇÄ¿µÉ¿Ú´ôµÄ±íÇéÖС£
µÚ17Õ »ùÓÑã±ƣ¬Äã¾ÍÊÇÄÇλcosÄУ¿(1/2),µã»÷ÏÂÒ»Ò³¼ÌÐøÔĶÁ
ÉÏÒ»Õ Ŀ¼ ÏÂÒ»Ò³