"
銆婂垱鏂版柟妗堛�?/p>
2014
灞婇珮鑰冩暟瀛︼紙鏂囩锛変簩杞笓棰樼獊鐮撮娴嬫紨缁?/p>
鎻愯兘璁粌
锛堟禉姹熶笓鐗堬級
锛?/p>
绗?/p>
1
閮ㄥ垎
涓撻浜?/p>
绗簩璁?/p>
涓夎鎭掔瓑鍙樻崲涓庤В
涓夎褰?/p>
(
閫夋嫨銆?/p>
濉┖棰樺瀷
)
锛堜互
2013
骞寸湡棰樺拰妯℃嫙棰樹负渚嬶紝
鍚瓟妗堣В
鏋愶級
"
涓�銆侀�夋嫨棰?/p>
1
锛?/p>
(2013路閮戝窞妯℃嫙
)
鑻?/p>
伪
鏄鍥涜薄闄愯锛?/p>
tan
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
蟺
3
锛?/p>
伪
锛濓紞
5
12
锛?/p>
鍒?/p>
cos
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
蟺
6
锛?/p>
伪
锛?/p>
(
)
A.
1
5
B
锛庯紞
1
5
C.
5
13
D
锛庯紞
5
13
瑙ｆ瀽锛氶�?/p>
D
鐢变簬
伪
锛?/p>
蟺
3
鈭?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
2
k
蟺
锛?/p>
蟺
6
锛?/p>
2
k
蟺
锛?/p>
蟺
3
(
k
鈭?/p>
Z)
锛屼笖
tan
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
伪
锛?/p>
蟺
3
<0
锛屾晠
伪
锛?/p>
蟺
3
鏄鍥涜薄闄愯锛?/p>
鈭?/p>
sin
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
伪
锛?/p>
蟺
3
锛濓紞
5
13
锛?/p>
鈭?/p>
cos
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
蟺
6
锛?/p>
伪
锛?/p>
sin
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
蟺
2
锛?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
蟺
6
锛?/p>
伪
锛?/p>
sin
飪?/p>
飪?/p>
飪?/p>
飪?
飪?/p>
飪?/p>
蟺
3
锛?/p>
伪
锛濓紞
5
13
.
2
锛庡凡鐭?/p>
sin
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
伪
锛?/p>
蟺
3
锛?/p>
sin
伪
锛濓紞
4
3
5
锛岋紞
蟺
2
<
伪
<0
锛屽垯
cos
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
伪
锛?/p>
2
蟺
3
绛変簬
(
)
A
锛庯紞
4
5
B
锛庯紞
3
5
C.
3
5
D.
4
5
瑙ｆ瀽锛氶�?/p>
D
sin
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
伪
锛?/p>
蟺
3
锛?/p>
sin
伪
锛濓紞
4
3
5
鈬?/p>
3
2
sin
伪
锛?/p>
1
2
cos
伪
锛濓紞
4
5
鈬?/p>
cos
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
伪
锛?/p>
蟺
3
锛濓紞
4
5
鈬?/p>
cos
(
伪
锛?/p>
飪?/p>
飪?/p>
飪?/p>
2
蟺
3
锛?/p>
4
5
.
3
锛?2013路鏂拌鏍囧叏鍥藉嵎鈪?/p>
)
鈻?/p>
ABC
鐨勫唴瑙?/p>
A
锛?/p>
B
锛?/p>
C
鐨勫杈瑰垎鍒负
a
锛?/p>
b
锛?/p>
c
锛屽凡鐭?/p>
b
锛?/p>
2
锛?
B
锛?/p>
蟺
6
锛?/p>
C
锛?/p>
蟺
4
锛屽垯鈻?/p>
ABC
鐨勯潰绉负
(
)
A
锛?/p>
2
3
锛?/p>
2
B.
3
锛?/p>
1
C
锛?/p>
2
3
锛?/p>
2
D.
3
锛?/p>
1
瑙ｆ瀽锛氶�?/p>
B
鐢辨寮﹀畾鐞嗙煡
b
sin
B
锛?
c
sin
C
锛岀粨鍚堟潯浠跺緱
c
锛?
b
sin
C
sin
B
锛?/p>
2
2.
鍙?/p>
sin
A
锛?/p>
sin(
蟺
锛?/p>
B
锛?/p>
C
)
锛?/p>
sin(
B
锛?/p>
C
)
锛?/p>
sin
B
cos
C
锛?/p>
cos
B
sin
C
锛?
6
锛?/p>
2
4
锛屾墍浠モ柍
ABC
鐨勯潰绉?/p>
S
锛?/p>
1
2