2006
骞翠腑鑰冩暟瀛﹁瘯棰樻眹缂栧強瑙ｆ瀽
鎺㈢储鍨嬮棶棰?/p>
鎺㈢储鍨嬮棶棰?/p>
杩欑被闂寰�寰�娑夊強闈㈠緢骞匡紝涓昏鏄帰绱㈤璁剧粨璁烘槸鍚﹀瓨鍦紝鎴栨槸鍚︽垚绔嬶紝鎴栨槸璁╁鐢熻嚜宸卞厛鐚滄兂缁撹锛屽啀杩涜
鐮旂┒浠庤�屽緱鍑烘纭殑缁撹绛夌瓑锛岃繖浜涢閫氬父鏈変竴瀹氱殑闅惧害锛屽嚑涔庡湪鍏ㄥ浗鍚勫湴鐨勪腑鑰冩暟瀛﹁瘯鍗蜂腑閮借兘瑙佸埌銆?/p>
1
銆?/p>
锛?/p>
2006
娴欐睙鑸熷北锛?/p>
濡傚浘
1
锛屽湪鐩磋鍧愭爣绯讳腑锛岀偣
A
鐨勫潗鏍囦负锛?/p>
1
锛?/p>
0
锛?/p>
锛?/p>
鈥?/p>
浠?/p>
OA鈥?/p>
涓鸿竟鍦ㄧ鍥涜薄闄愬唴浣滅瓑杈光柍
AOB
锛岀偣
C
涓?/p>
x
杞寸殑姝ｅ崐杞翠笂涓�鍔ㄧ偣锛?/p>
OC>1
锛?/p>
锛岃繛缁?/p>
BC
锛?/p>
鈥?/p>
浠?/p>
BC鈥?/p>
涓鸿竟鍦ㄧ鍥涜薄闄愬唴浣滅瓑杈光柍
CBD
锛岀洿绾?/p>
DA
浜?/p>
y
杞翠簬鐐?/p>
E
锛?/p>
锛?/p>
1
锛夎瘯闂柍
OBC
涓庘柍
ABD
鍏ㄧ瓑鍚楋紵骞惰瘉鏄庝綘鐨勭粨璁猴紟
锛?/p>
2
锛夐殢鐫�鐐?/p>
C
浣嶇疆鐨勫彉鍖栵紝鐐?/p>
E
鐨勪綅缃槸鍚︿細鍙戠敓鍙樺寲锛岃嫢娌℃湁鍙樺寲锛屾眰鍑虹偣
E鈥?/p>
鐨勫潗鏍囷紱鑻ユ湁鍙樺寲锛岃璇存槑鐞嗙敱锛?/p>
锛?/p>
3
锛夊鍥?/p>
2
锛屼互
OC
涓虹洿寰勪綔鍦嗭紝涓庣洿绾?/p>
DE
鍒嗗埆浜や簬鐐?/p>
F
銆?/p>
G
锛岃
AC=m
锛?/p>
AF=n
锛岀敤鍚?/p>
n
鐨勪唬鏁板紡琛ㄧず
m
锛?/p>
[
瑙ｆ瀽
]
锛?/p>
1
锛変袱涓笁瑙掑舰鍏ㄧ瓑
鈭碘柍
AOB
銆佲柍
CBD
閮芥槸绛夎竟涓夎褰?/p>
鈭?/p>
OBA=
鈭?/p>
CBD=60
掳
鈭粹垹
OBA+
鈭?/p>
ABC=
鈭?/p>
CBD+
鈭?/p>
ABC
鍗斥垹
OBC=
鈭?/p>
ABD
鈭?/p>
OB=AB
锛?/p>
BC=BD
鈻?/p>
OBC
鈮屸柍
ABD
锛?/p>
2
锛夌偣
E
浣嶇疆涓嶅彉
鈭碘柍
OBC
鈮屸柍
ABD
鈭粹垹
BAD=
鈭?/p>
BOC=60
掳
鈭?/p>
OAE=180
掳
-60
掳
-60
掳
=60
掳
鍦?/p>
Rt
鈻?/p>
EOA
涓紝
EO=OA
虏
tan60
掳
=
3
鎴栤垹
AEO=30
掳锛屽緱
AE=2
锛屸埓
OE=
3
鈭寸偣
E
鐨勫潗鏍囦负锛?/p>
0
锛?/p>
3
锛?/p>