1.(
鏂?/p>
)(2011路
骞垮窞妫�娴?/p>
)
鑻?/p>
sin
伪
<0
涓?/p>
tan
伪
>0
锛屽垯
伪
鏄?/p>
(
)
A
锛庣涓�璞￠檺瑙?/p>
B
锛庣浜岃薄闄愯
C
锛庣涓夎薄闄愯
D
锛庣鍥涜薄闄愯
[
绛旀
]
C
[
瑙ｆ瀽
]
鈭?/p>
sin
伪
<0
锛屸埓
伪
涓虹涓夈�佸洓璞￠檺瑙掓垨缁堣竟钀藉湪
y
杞磋礋鍗婅酱
涓婏紝
鈭?/p>
tan
伪
>0
锛屸埓
伪
涓虹涓�銆佷笁璞￠檺瑙掞紝
鈭?/p>
伪
涓虹涓夎薄闄愯锛?/p>
(
鐞?/p>
)(2011路
缁甸槼浜岃瘖
)
宸茬煡瑙?/p>
A
鍚屾椂婊¤冻
sin
A
>0
涓?/p>
tan
A
<0
锛屽垯瑙?/p>
A
鐨勭粓杈逛竴瀹氳惤鍦?/p>
(
)
A
锛庣涓�璞￠檺
B
锛庣浜岃薄闄?/p>
C
锛庣涓夎薄闄?/p>
D
锛庣鍥涜薄闄?/p>
[
绛旀
]
B
[
瑙ｆ瀽
]
鐢?/p>
sin
A
>0
涓?/p>
tan
A
<0
鍙煡锛?/p>
cos
A
<0
锛?/p>
鎵�浠ヨ
A
鐨勭粓杈逛竴
瀹氳惤鍦ㄧ浜岃薄闄愶紟閫?/p>
B.
2
锛?/p>
(2010路
瀹夊窘鐪?/p>
168
涓鑱旇�?/p>
)
宸茬煡闆嗗悎
A
锛?/p>
{(
x
锛?/p>
y
)|
y
锛?/p>
sin
x
}
锛?/p>
闆嗗悎
B
锛?/p>
{(
x
锛?/p>
y
)|
y
锛?/p>
tan
x
}
锛屽垯
A
鈭?/p>
B
锛?/p>
(
)
A
锛?/p>
{(0,0)}
B
锛?/p>
{(蟺
锛?/p>
0)
锛?/p>
(0,0)}
C
锛?/p>
{(
x
锛?/p>
y
)|
x
锛?/p>
k
蟺
锛?/p>
y
锛?/p>
0
锛?/p>
k
鈭?/p>
Z}