涓撻
04
鐗涢】杩愬姩瀹氬緥
绗竴閮ㄥ垎鍚嶅笀缁艰堪
鏇茬嚎杩愬姩鏄珮鑰冪殑鐑偣鍐呭锛屾湁鏃朵负閫夋嫨棰橈紝鏈夋椂浠ヨ绠楅褰㈠紡鍑虹幇锛岄噸鐐硅�冩煡鐨勫唴瀹规湁锛氬钩鎶涜繍
鍔ㄧ殑瑙勫緥鍙婂叾鐮旂┒鏂规硶锛屽渾鍛ㄨ繍鍔ㄧ殑瑙掑害銆佺嚎閫熷害銆佸悜蹇冨姞閫熷害锛屽仛鍦嗗懆杩愬姩鐨勭墿浣撶殑鍙楀姏涓庤繍鍔?/p>
鐨勫叧绯伙紝鍚屾椂锛?/p>
杩樺彲浠ヤ笌甯︾數绮掑瓙鐨勭數纾佸満鐨勮繍鍔ㄧ瓑鐭ヨ瘑杩涜缁煎悎鑰冩煡锛涢噸鐐硅�冩煡鐨勬柟娉曟湁杩愬姩鐨?/p>
鍚堟垚涓庡垎瑙ｏ紝绔栫洿骞抽潰鍐呯殑鍦嗗懆杩愬姩搴旀帉鎻℃渶楂樼偣鍜屾渶浣庣偣鐨勫鐞嗘柟娉曘�?/p>
绗簩閮ㄥ垎绮鹃�夎瘯棰?/p>
涓�銆佸崟閫夐
1
锛庡鍥炬墍绀猴紝
A
銆?/p>
B
銆?/p>
C
鏄按骞抽潰涓婂悓涓�鐩寸嚎涓婄殑涓夌偣锛屽叾涓?/p>
AB=BC
锛屽湪
A
鐐规涓婃柟鐨?/p>
O
鐐逛互鍒?/p>
閫熷害
v0
姘村钩鎶涘嚭涓�灏忕悆锛屽垰濂借惤鍦?/p>
B
鐐癸紝灏忕悆杩愬姩鐨勮建杩逛笌
OC
鐨勮繛绾夸氦浜?/p>
D
鐐癸紝涓嶈绌烘皵闃?/p>
鍔涳紝閲嶅姏鍔犻�熷害涓?/p>
g
锛屼笅鍒楄娉曟纭殑鏄?/p>
( )
A
锛庡皬鐞冧粠
O
鍒?/p>
D
鐐圭殑姘村钩浣嶇Щ鏄粠
O
鍒?/p>
B
鐐规按骞充綅绉荤殑
1:3
B
锛庡皬鐞冪粡杩?/p>
D
鐐逛笌钀藉湪
B
鐐规椂閲嶅姏鐬椂鍔熺巼鐨勬瘮涓?/p>
2:3
C
锛庡皬鐞冧粠
O
鍒?/p>
D
鐐逛笌浠?/p>
D
鍒?/p>
B
鐐逛袱娈佃繃绋嬩腑閲嶅姏鍋氬姛鐨勬瘮涓?/p>
1/3
D
锛庡皬鐞冪粡杩?/p>
D
鐐规椂閫熷害涓庢按骞虫柟鍚戝す瑙掔殑姝ｅ垏鍊兼槸钀藉埌
B
鐐规椂閫熷害涓庢按骞虫柟鍚戝す瑙掔殑姝ｅ垏鍊肩殑
1/4
銆愮瓟妗堛�?/p>
C
銆愯В鏋愩�?/p>
銆愯瑙ｃ�?/p>
A
锛庤灏忕悆鍋氬钩鎶涜繍鍔ㄧ殑鏃堕棿涓?/p>
t
锛屼綅绉讳负
L
锛屽垯鏈夛細Lcos胃=v
0
t
锛汱sin胃=
1
2
gt
2
锛岃仈绔嬭В寰楋細
饾憽
=
2饾憽
0
饾憽饾憽饾憽饾憽
饾憽
锛岃鈭燨BA=伪锛屸垹C=尾锛屽垯
tan伪=
饾憽
饾憽饾憽
锛宼an尾=
饾憽
饾憽饾憽
锛岀敱浜?/p>
AB=BC
锛屽彲鐭?/p>
tan伪=2 tan尾锛?
鍥犲湪
D
鐐规椂锛?/p>
饾憽
饾憽
=
2饾憽
0
饾憽饾憽饾憽饾憽
饾憽
锛屽湪
B
鐐规椂锛?/p>
饾憽
饾憽
=
2饾憽
0
饾憽饾憽饾憽饾憽
饾憽
锛屽垯钀藉埌
D
鐐规墍鐢ㄦ椂闂存槸钀藉埌
B
鐐规墍
鐢ㄦ椂闂寸殑
1
2
锛屽嵆灏忕悆缁忚繃
D
鐐圭殑姘村钩浣嶇Щ鏄惤鍒?/p>
B
鐐规按骞充綅绉荤殑
1
2
锛屾晠
A
閿欒锛?/p>
B
锛庣敱浜庤惤鍒?/p>
D
鐐规墍鐢ㄦ椂闂存槸钀藉埌
B
鐐规墍鐢ㄦ椂闂寸殑
1
2
锛屾晠
D
鐐瑰拰
B
鐐圭珫鐩存柟鍚戠殑閫熷害涔嬫瘮涓?/p>
1
锛?/p>
2
锛屾晠
灏忕悆缁忚繃
D
鐐逛笌钀藉湪
B
鐐规椂閲嶅姏鐬椂鍔熺巼鐨勬瘮涓?/p>
1
2
锛屾晠
B
閿欒锛?/p>
C
锛庡皬鐞冧粠
O
鍒?/p>
D
鐐逛笌浠?/p>
D
鍒?/p>
B
鐐逛袱娈佃繃绋嬩腑鏃堕棿鐩哥瓑锛屽垯绔栫洿浣嶇Щ涔嬫瘮涓?/p>
1:3
锛屽垯閲嶅姏鍋氬姛鐨?/p>
姣斾负
1:3
锛岄�夐」
C
姝ｇ‘锛?/p>
D
锛庡皬鐞冪殑閫熷害涓庢按骞虫柟鍚戠殑澶硅
tan胃锛?/p>
饾憽饾憽
饾憽
0
锛屾晠灏忕悆缁忚繃
D
鐐规椂閫熷害涓庢按骞虫柟鍚戝す瑙掔殑姝ｅ垏鍊兼槸
钀藉埌
B
鐐规椂閫熷害涓庢按骞虫柟鍚戝す瑙掔殑姝ｅ垏鍊肩殑
1
2
锛屾晠閫夐」
D
閿欒锛?/p>