澶╁ぉ缁?/p>
15
涓夎鎭掔瓑鍙樻崲
涓�銆侀�夋嫨棰?/p>
1
锛?/p>
(2017路
琛￠槼浜岃仈
)
2
sin
47掳
锛?/p>
3
sin
17掳
cos
17掳
锛?/p>
(
)
A
锛庯紞
3
B
锛庯紞
1
C
.
3
D
锛?/p>
1
2
锛庡寲绠�
2
cos
x
锛?/p>
6
sin
x
绛変簬
(
)
A
锛?/p>
2
2
cos
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
蟺
6
锛?/p>
x
B
锛?/p>
2
2
cos
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?
蟺
3
锛?/p>
x
C
锛?/p>
2
2
cos
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
蟺
6
锛?/p>
x
D
锛?/p>
2
2
cos
飪?/p>
飪?/p>
飪?/p>
飪?
飪?/p>
飪?/p>
蟺
3
锛?/p>
x
3
锛?/p>
(2017路
骞垮窞浜屾祴
)
宸茬煡
cos
(
蟺
12
锛?/p>
胃)
锛?/p>
1
3
锛屽垯
sin
(
5
蟺
12
锛?/p>
胃)
鐨勫�兼槸
(
)
A
.
1
3
B
.
2
2
3
C
锛庯紞
1
3
D
锛庯紞
2
2
3
4
锛庡凡鐭?/p>
2
tan
伪路
sin
伪
锛?/p>
3
锛岋紞
蟺
2
<伪<0
锛屽垯
cos
飪?/p>
飪?/p>
飪?/p>
飪?
飪?/p>
飪?/p>
伪
锛?/p>
蟺
6
鐨勫�兼槸
(
)
A
锛?/p>
0
B
.
3
2
C
锛?/p>
1
D
.
1
2
5
锛庤
伪
鈭?/p>
(0
锛?/p>
蟺
)
锛?/p>
sin
伪
锛?/p>
cos
伪
锛?/p>
1
3
锛屽垯
cos
2伪
鐨勫�兼槸
(
)
A
.
17
9
B
锛庯紞
2
2
3
C
锛庯紞
17
9
D
.
17
9
鎴栵紞
17
9
6
锛庤嫢鈭?/p>
A
锛?/p>
22掳
锛屸垹
B
锛?/p>
23掳
锛屽垯
(1
锛?/p>
tan
A)(1
锛?/p>
tan
B)
鐨勫�兼槸
(
)
A
.
3
B
锛?/p>
2
C
锛?/p>
1
锛?/p>
2
D
锛?/p>
2(
tan
A
锛?/p>
tan
B)
7
锛?/p>
(2017路
绂忓缓璐ㄦ
)
宸茬煡
sin
(x
锛?/p>
蟺
3
)
锛?/p>
1
3
锛屽垯
cos
x
锛?/p>
cos
(
蟺
3
锛?/p>
x)
鐨勫�?/p>
涓?/p>
(
)
A
锛庯紞
3
3
B
.
3
3