ÌâÄ¿ÄÚÈÝ
½üÄêÀ´£¬ÎÒ¹ú·¿µØ²úÒµ·¢Õ¹Ñ¸ËÙ£¬Ô½À´Ô½¶àµÄ¾ÓÃñÇÇǨоӣ¬¾ÓסÌõ¼þºÍ»·¾³ÏÔÖø¸ÄÉÆ¡£¶Áͼ£¬ÔËÓÃÒÔϹ«Ê½¼°Ïà¹ØÖªÊ¶Íê³ÉÏÂÁÐÎÊÌâ¡£
![]()
¡¡ ijµØÕýÎçÌ«Ñô¸ß¶ÈµÄ´óС£ºH=90¡ã-|¦Õ-¦Ä|£¬Ê½ÖÐHΪÕýÎçÌ«Ñô¸ß¶È½Ç£¬¦ÕΪµ±µØÎ³¶È£»¦ÄΪ̫ÑôÖ±Éäµãγ¶È£¬µ±µØÏİëÄêÈ¡ÕýÖµ£¬¶¬°ëÄêÈ¡¸ºÖµ¡£tan35¡ã¡Ö0.7 tan45¡ã=1 tan60¡ã¡Ö1.732
·¿µØ²ú¿ª·¢ÉÌÔÚij³ÇÊУ¨±±Î³30¡ã£©½¨ÔìÁËÁ½´±ÉÌÆ·×¡Õ¬Â¥£¬Ä³»§¾ÓÃñÂòµ½Á˱±Â¥Ò»²ãµÄÒ»Ì×·¿×Ó£¬ÓÚ´º½Úǰס½øºó·¢ÏÖÕýÎçÌ«Ñô¹âÏß±»ÄÏÂ¥µ²×¡¡£ÇëÎʸ÷¿×ÓÒ»ÄêÕýÎçÌ«Ñô¹âÏß±»ÄÏÂ¥µ²×¡µÄʱ¼ä´óÔ¼ÊÇ ¡£¨¡¡ £©
A.1¸öÔ¡¡¡¡¡¡¡¡¡¡¡¡ B.3¸öÔ¡¡¡¡¡¡¡¡¡¡¡¡ C.6¸öÔ¡¡¡¡¡¡¡¡¡¡ D.9¸öÔÂ
C
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

