涓�冩暟瀛︽槗閿欓涓撻澶嶄範
-
鐩磋涓夎褰㈢殑杈硅鍏崇郴缁冧範棰樺惈绛旀瑙ｆ瀽
涓�銆佺洿瑙掍笁瑙掑舰鐨勮竟瑙掑叧绯?/p>
1
锛?/p>
鍦?/p>
Rt
鈻?/p>
ACB
鍜?/p>
鈻?/p>
AEF
涓紝
鈭?/p>
ACB
锛?/p>
鈭?/p>
AEF
锛?/p>
90掳
锛岃嫢鐐?/p>
P
鏄?/p>
BF
鐨勪腑鐐癸紝杩炴帴
PC
锛?/p>
PE.
鐗规畩鍙戠幇锛?/p>
濡傚浘
1
锛岃嫢鐐?/p>
E
銆?/p>
F
鍒嗗埆钀藉湪杈?/p>
AB
锛?/p>
AC
涓婏紝鍒欑粨璁猴細
PC
锛?/p>
PE
鎴愮珛锛堜笉瑕佹眰璇佹槑锛夛紟
闂鎺㈢┒锛?/p>
鎶婂浘
1
涓殑
鈻?/p>
AEF
缁曠偣
A
椤烘椂閽堟棆杞紟
(1)
濡傚浘
2
锛岃嫢鐐?/p>
E
钀藉湪杈?/p>
CA
鐨勫欢闀跨嚎涓婏紝鍒欎笂杩扮粨璁烘槸鍚︽垚绔嬶紵鑻ユ垚绔嬶紝璇风粰浜堣瘉鏄庯紱鑻?/p>
涓嶆垚绔嬶紝璇疯鏄庣悊鐢憋紱
(2)
濡傚浘
3
锛岃嫢鐐?/p>
F
钀藉湪杈?/p>
AB
涓婏紝鍒欎笂杩扮粨璁烘槸鍚︿粛鐒舵垚绔嬶紵鑻ユ垚绔嬶紝璇风粰浜堣瘉鏄庯紱鑻ヤ笉鎴?/p>
绔嬶紝璇疯鏄庣悊鐢憋紱
(3)
璁?
AC
BC
锛?/p>
k
锛屽綋
k
涓轰綍鍊兼椂锛?/p>
鈻?/p>
CPE
鎬绘槸绛夎竟涓夎褰紵锛堣鐩存帴鍐欏嚭鍚庣殑鍊硷紝涓嶅繀璇达級
銆愮瓟妗堛�?/p>
飥?/p>
飥?/p>
1
PC
PE
飥?/p>
鎴愮珛
飥?/p>
飥?/p>
2
锛?/p>
PC
PE
飥?/p>
鎴愮珛
飥?/p>
飥?/p>
3
褰?/p>
k
涓?/p>
3
3
鏃讹紝
CPE
V
鎬绘槸绛夎竟涓?/p>
瑙掑舰
銆愯В鏋愩�?/p>
銆愬垎鏋愩�?/p>
锛?/p>
1
锛夎繃鐐?/p>
P
浣?/p>
PM
鈯?/p>
CE
浜庣偣
M
锛岀敱
EF
鈯?/p>
AE
锛?/p>
BC
鈯?/p>
AC
锛屽緱鍒?/p>
EF
鈭?/p>
MP
鈭?/p>
CB
锛屼粠鑰屾湁
EM
FP
MC
PB
飥?/p>
锛屽啀鏍规嵁鐐?/p>
P
鏄?/p>
BF
鐨勪腑鐐癸紝鍙緱
EM=MC
锛屾嵁姝ゅ緱鍒?/p>
PC=PE
锛?/p>
锛?/p>
2
锛夎繃鐐?/p>
F
浣?/p>
FD
鈯?/p>
AC
浜庣偣
D
锛岃繃鐐?/p>
P
浣?/p>
PM
鈯?/p>
AC
浜庣偣
M
锛岃繛鎺?/p>
PD
锛屽厛璇?/p>
鈻?/p>
DAF
鈮?/p>
鈻?/p>
EAF
锛屽嵆鍙緱鍑?/p>
AD=AE
锛涘啀璇?/p>
鈻?/p>
DAP
鈮?/p>
鈻?/p>
EAP
锛屽嵆鍙緱鍑?/p>
PD=PE
锛涙渶鍚庢牴鎹?/p>
FD
鈯?/p>
AC
锛?/p>
BC
鈯?/p>
AC
锛?/p>
PM
鈯?/p>
AC
锛屽彲寰?/p>
FD
鈭?/p>
BC
鈭?/p>
PM
锛屽啀鏍规嵁鐐?/p>
P
鏄?/p>
BF
鐨勪腑鐐癸紝鎺ㄥ緱
PC=PD
锛?/p>
鍐嶆牴鎹?/p>
PD=PE
锛屽嵆鍙緱鍒扮粨璁猴紟
锛?/p>
3
锛夊洜涓?/p>
鈻?/p>
CPE
鎬绘槸绛夎竟涓夎褰紝鍙緱
鈭?/p>
CEP=60掳
锛?/p>
鈭?/p>
CAB=60掳
锛涚敱
鈭?/p>
ACB=90掳
锛屾眰鍑?/p>
鈭?/p>
CBA=30掳
锛涙渶鍚庢牴鎹?/p>
AC
k
BC
飥?/p>
锛?/p>
AC
BC
=tan30掳
锛屾眰鍑哄綋
鈻?/p>
CPE
鎬绘槸绛夎竟涓夎褰㈡椂锛?/p>
k
鐨勫�兼槸
澶氬皯鍗冲彲锛?/p>
銆愯瑙ｃ�?/p>
瑙ｏ細锛?/p>
1
锛?/p>
PC=PE
鎴愮珛锛岀悊鐢卞涓嬶細
濡傚浘
2
锛岃繃鐐?/p>
P
浣?/p>
PM
鈯?/p>
CE
浜庣偣
M
锛?/p>
鈭?/p>
EF
鈯?/p>
AE
锛?/p>
BC
鈯?/p>
AC
锛?/p>
鈭?/p>
EF
鈭?/p>
MP
鈭?/p>
CB
锛?