涓撻浜?/p>
涓夎鍑芥暟涓庡钩闈㈠悜閲?/p>
鐪熼浣撻獙
路
寮曢鍗?/p>
涓�銆侀�夋嫨棰?/p>
1
锛?/p>
(2015路
鍏ㄥ浗鍗?/p>
鈪?/p>
)sin 20掳
cos 10掳
锛?/p>
cos 160掳
sin 10掳
锛?/p>
(
)
A
锛庯紞
3
2
B.
3
2
C
锛庯紞
1
2
D.
1
2
2
锛?/p>
(2014路
鍏ㄥ浗鍗?/p>
鈪?/p>
)
鑻?/p>
tan
伪
>0
锛屽垯
(
)
A
锛?/p>
sin
伪
>0
B
锛?/p>
cos
伪
>0
C
锛?/p>
sin 2
伪
>0
D
锛?/p>
cos 2
伪
>0
3
锛?/p>
(2015路
鍏ㄥ浗鍗?/p>
鈪?/p>
)
璁?/p>
D
涓衡柍
ABC
鎵�鍦ㄥ钩闈㈠唴涓�鐐癸紝
BC
鈫?/p>
锛?/p>
3
CD
鈫?/p>
锛屽垯
(
)
A.
AD
鈫?/p>
锛濓紞
1
3
AB
鈫?/p>
锛?/p>
4
3
AC
鈫?/p>
B.
AD
鈫?/p>
锛?/p>
1
3
AB
鈫?/p>
锛?/p>
4
3
AC
鈫?/p>
C.
AD
鈫?/p>
锛?/p>
4
3
AB
鈫?/p>
锛?/p>
1
3
AC
鈫?/p>
D.
AD
鈫?/p>
锛?/p>
4
3
AB
鈫?/p>
锛?/p>
1
3
AC
鈫?/p>
4
锛?/p>
(2014路
姹熻タ楂樿�?/p>
)
鍦ㄢ柍
ABC
涓紝鍐呰
A
锛?/p>
B
锛?/p>
C
鎵�瀵圭殑杈瑰垎鍒槸
a
锛?/p>
b
锛?/p>
c
锛岃嫢
3
a
锛?/p>
2
b
锛屽垯
2sin
2
B
锛?/p>
sin
2
A
sin
2
A
鐨勫�间负
(
)
A
锛庯紞
1
9
B.
1
3
C
锛?/p>
1
D.
7
2
5
锛?/p>
(2014路
鍥涘窛楂樿�?/p>
)
骞抽潰鍚戦噺
a
锛?/p>
(1
锛?/p>
2)
锛?/p>
b
锛?/p>
(4
锛?/p>
2)
锛?/p>
c
锛?/p>
m
a
锛?/p>
b
(
m
鈭?/p>
R
)
锛?/p>
涓?/p>
c
涓?/p>
a
鐨勫す瑙掔瓑浜?/p>
c
涓?/p>
b
鐨勫す瑙掞紝鍒?/p>
m
锛?/p>
(
)
A
锛庯紞
2
B
锛庯紞
1
C
锛?/p>
1
D
锛?/p>
2
6
锛?/p>
(2015路
鍏ㄥ浗鍗?/p>
鈪?/p>
)
鍑芥暟
f
(
x
)
锛?/p>
cos(
蠅x
锛?/p>
蠁
)
鐨勯儴鍒嗗浘璞″鍥炬墍绀猴紝
鍒?/p>
f
(
x
)
鐨勫崟璋冮�掑噺鍖洪棿涓?/p>
(
)