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锛堟椂闂?/p>
100
鍒嗛挓锛屾弧鍒?/p>
150
鍒嗭級
20011.11
(
鏈瘯鍗锋墍鏈夌瓟妗堣涔﹀啓鍦ㄧ瓟棰樺嵎瑙勫畾浣嶇疆涓?/p>
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涓�銆侀�夋嫨棰橈紙鏈ぇ棰樺叡
6
棰橈紝姣忛
4
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24
鍒嗭級
1
锛?/p>
鎶?/p>
ad
bc
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鍐?/p>
鎴?/p>
姣?/p>
渚?/p>
寮?/p>
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鍏?/p>
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,
,
,
a
b
c
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鍧?/p>
涓?/p>
涓?/p>
0
锛?/p>
锛?/p>
涓?/p>
鍒?/p>
閫?/p>
椤?/p>
涓?/p>
閿?/p>
璇?/p>
锛?/p>
锛?/p>
鐨?/p>
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A
锛?
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d
飥?/p>
锛?/p>
B
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b
d
a
c
飥?/p>
锛?/p>
C
锛?/p>
c
a
b
d
飥?/p>
锛?/p>
D
锛?/p>
a
b
c
d
飥?/p>
锛?/p>
2
锛庡鏋滀竴涓笁瑙掑舰淇濇寔褰㈢姸涓嶅彉锛屼絾鍛ㄩ暱鎵╁ぇ涓哄師鏉ョ殑
4
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锛?/p>
A
锛?/p>
2
鍊嶏紱
B
锛?/p>
4
鍊嶏紱
C
锛?/p>
8
鍊嶏紱
D
锛?/p>
16
鍊嶏紟
3
锛庝笅鍒楀懡棰樹腑姝ｇ‘鐨勬槸鈥︹�︹�︹�︹�︹�︹�︹�︹�︹�︹�︹�︹�︹�︹�︹�︹�︹�?/p>
锛?/p>
锛?/p>
A
锛庢墍鏈夌殑鑿卞舰閮界浉浼硷紱
B
锛庢墍鏈夌殑鐭╁舰閮界浉浼硷紱
C
锛庢墍鏈夌殑绛夎叞涓夎褰㈤兘鐩镐技锛?/p>
D
锛庢墍鏈夌殑绛夎竟涓夎褰㈤兘鐩镐技锛?/p>
4
锛庡湪
Rt鈻?/p>
ABC
涓紝鈭?/p>
B
=90潞锛岃嫢
AC
=
a
锛屸垹
A
=
飦?/p>
锛屽垯
AB
鐨勯暱涓衡�︹�︹�︹�︼紙
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A
锛?/p>
sin
a
飦?/p>
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B
锛?/p>
cos
a
飦?/p>
锛?/p>
C
锛?/p>
tan
a
飦?/p>
锛?/p>
D
锛?/p>
cot
a
飦?/p>
锛?/p>
5
锛庣偣
C
鍦ㄧ嚎娈?/p>
AB
涓婏紝濡傛灉
AB
=3
AC
锛?/p>
AB
a
飥?/p>
锛岄偅涔?/p>
BC
绛変簬鈥︹�︹�︹�︼紙
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A
锛?/p>
1
3
a
锛?/p>
B
锛?
2
3
a
锛?/p>
C
锛?/p>
1
3
a
飥?/p>
锛?/p>
D
锛?/p>
2
3
a
飥?/p>
锛?/p>
6
锛庡凡鐭モ柍
ABC
鐨勪笁杈归暱鍒嗗埆涓?/p>
6 cm
锛?/p>
7.5 cm
锛?/p>
9 cm
锛屸柍
DEF
鐨勪竴杈归暱涓?/p>
5cm
锛岃嫢杩?/p>
涓や釜涓夎褰㈢浉浼硷紝鍒欌柍
DEF
鐨勫彟涓よ竟闀垮彲鑳芥槸涓嬪垪鍚勭粍涓殑鈥︼紙
锛?/p>
A
锛?/p>
2 cm
锛?/p>
3 cm
锛?/p>
B
锛?/p>
4 cm
锛?/p>
6 cm
锛?/p>
C
锛?/p>
6 cm
锛?/p>
7 cm
锛?/p>
D
锛?/p>
7 cm
锛?/p>
9 cm
锛?/p>