2019-2020
娴欐睙鐪佸缓鍏颁腑瀛︽暟瀛︿腑鑰冭瘯棰?/p>
(
鍚瓟妗?/p>
)
涓�銆侀�夋嫨棰?/p>
1
锛?/p>
浜屾鍑芥暟
y
锛?/p>
x
2
锕?/p>
6
x
+
m
婊¤冻浠ヤ笅鏉′欢锛氬綋锕?/p>
2
锛?/p>
x
锛滐梗
1
鏃讹紝瀹冪殑鍥捐薄浣嶄簬
x
杞寸殑涓嬫柟锛?/p>
褰?/p>
8
锛?/p>
x
锛?/p>
9
鏃讹紝瀹冪殑鍥捐薄浣嶄簬
x
杞寸殑涓婃柟锛屽垯
m
鐨勫�间负锛?/p>
锛?/p>
A
锛?/p>
27
B
锛?/p>
9
C
锛庯梗
7
D
锛庯梗
16
2
锛?/p>
濡傚浘锛屽皢
鈻?/p>
ABCD
娌垮瑙掔嚎
AC
鎶樺彔锛屼娇鐐?/p>
B
钀藉湪
B
鈥?/p>
澶勶紝鑻モ垹
1=
鈭?/p>
2=44掳
锛屽垯鈭?/p>
B
涓?
锛?/p>
锛?/p>
A
锛?/p>
66掳
B
锛?/p>
104掳
C
锛?/p>
114掳
D
锛?/p>
124掳
3
锛?/p>
鍦?/p>
Rt
鈻?/p>
ABC
涓紝鈭?/p>
C
锛?/p>
90
掳锛?/p>
AB
锛?/p>
4
锛?/p>
AC
锛?/p>
1
锛屽垯
cosB
鐨勫�间负锛?/p>
锛?/p>
A
锛?
15
4
B
锛?
1
4
C
锛?
15
15
D
锛?
4
17
17
4
锛?/p>
濡傚浘锛岃嫢閿愯
鈻?/p>
ABC
鍐呮帴浜庘姍
O
锛岀偣
D
鍦ㄢ姍
O
澶栵紙涓庣偣
C
鍦?/p>
AB
鍚屼晶锛夛紝鍒欎笅鍒椾笁涓粨
璁猴細
鈶爏in
鈭?/p>
C
锛?/p>
sin
鈭?/p>
D
锛?/p>
鈶os
鈭?/p>
C
锛?/p>
cos
鈭?/p>
D
锛?/p>
鈶an
鈭?/p>
C
锛?/p>
tan
鈭?/p>
D
涓紝姝ｇ‘鐨勭粨璁轰负锛?/p>
锛?/p>
A
锛?/p>
鈶犫憽
B
锛?/p>
鈶♀憿
C
锛?/p>
鈶犫憽鈶?/p>
D
锛?/p>
鈶犫憿
5
锛?/p>
2
飥?/p>
鐨勭浉鍙嶆暟鏄紙
锛?/p>
A
锛?/p>
2
飥?/p>
B
锛?/p>
2
C
锛?
1
2
D
锛?/p>
1
2
飥?
6
锛?/p>
濡傚浘锛?/p>
AB
鈭?/p>
CD
锛?/p>
AE
骞冲垎鈭?/p>
CAB
浜?/p>
CD
浜庣偣
E
锛岃嫢鈭?/p>
C=70
掳锛屽垯鈭?/p>
AED
搴︽暟涓?/p>
( )
A
锛?/p>
110
掳
B
锛?/p>
125
掳
C
锛?/p>
135
掳
D
锛?/p>
140
掳
7
锛?/p>
宸茬煡鐩寸嚎
//
m
n
锛屽皢涓�鍧楀惈
30
掳
瑙掔殑鐩磋涓夎鏉?/p>
ABC
鎸夊鍥炬柟寮忔斁缃?
锛?/p>
30
ABC
飪?/p>
飥?/p>
飩?/p>
锛夛紝鍏朵腑
A
锛?/p>
B
涓ょ偣鍒嗗埆钀藉湪鐩寸嚎
m
锛?/p>
n
涓婏紝鑻?/p>
1
40
飪?/p>
飥?/p>
飩?/p>
锛屽垯
2
飪?/p>
鐨勫害鏁?/p>
涓猴紙
锛?/p>