1.BoA å®å¿
2.如图，源码已知直线l的源码的函数表达式为y=-¾ x+8，且l与x轴、源码y轴分别交于A、源码B两点
3.L L L LOVE
4.如图，源码shopex 源码OA.OB分别是源码时钟桌面源码小半圆的直径，且OA=OB=6cm.LBOA=90°,源码阴影部分的面积是多少？
BoA å®å¿
ææï¼Ashlee Simpson
æ²åï¼L.O.V.E
http://...:/stream/music2/contents//mp3_src/.mp3
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如图，已知直线l的源码的函数表达式为y=-¾ x+8，且l与x轴、源码y轴分别交于A、源码B两点
此题有两种情况：
在△ABO中∠BOA=°，源码OA=6，源码OB=8，源码科幻网页源码由勾股定理得：AB=，源码
∵∠BAO=∠BAO，源码BQ=2t，AQ=-2t，集合运算源码AP=t，
第一种情况：
AQAB
=
APAO
时，△AQP∽△ABO，
即
-2t
=
t6
解得：t=
第二种情况：
当
AQAO
=
APAB
时△AQP∽△AOB，HTMLgo跳转源码
即
-2t6
=
t
解得：t=
．
答案为：当t为
或
时，以点A、P、Q为顶点的三角形与△AOB相似．
L L L LOVE
http://..7./pycs/A//.wma
L.O.V.E Ashlee Simpson
I'm talkin' bout love
All my girls stand in a circle and clap your hands this is for you
Ups and downs highs and lows no matter what you see me through
My boyfriend he don't answer on the telephone
I don't even know where the hell he goes
But all my girls we're in a circle and nobody's gonna break through
L,O,L,O,L,O,L.O.V.E
L,O,L,O,L,O
Oh did you hear me say?
L,O,L,O,L,O,L.O.V.E
L,O,L,O,L,O
Did you hear me say
L,O,L,O,L,O,L.O.V.E
L,O,L,O,L,O
Im talkin' bout
L,O,L,O,L,O,L.O.V.E
L,O,L,O,L,O
I'm talkin' bout love, say you'll be my girls for life
Girls for like
Oh hold off I need another one
I think you, you do too
Grab my bag, got my own money
Don't need any man in this room
My boyfriend he'll be calling me now anytime
I need all girls to keep him off my mind
So hold up we need another one
What we got is all good
L,O,L,O,L,O,L.O.V.E
L,O,L,O,L,O
Did you hear me say?
L,O,L,O,L,O,L.O.V.E
L,O,L,O,LO
Oh did you hear me say?
L,O,L,O,L,O,L.O.V.E
L,O,L,O,L,O
I'm talking bout
L,O,L,O,L,O,L.O.V.E
L,O,L,O,L,O
I'm talkin' bout love
I'm talkin' bout love
Love is an energy, love is a mystery
Love is meant to be true
Love is a part of me, love is the heart of me
Love is the best thing we do
L,O,L,O,L,O,L.O.V.E
L,O,L,O,L,O
Oh did you hear me say?
L,O,L,O,L,O,L.O.V.E
L,O,L,O,L,O
Did you hear me say?
L,O,L,O,L,O,L.O.V.E
L,O,L,O,L,O
I'm talkin' bout
L,O,L,O,L,O,L.O.V.E
L,O,L,O,L,O
I'm talkin' bout
L,O,L,O,L,O,L.O.V.E
L,O,L,O,L,O
Oh did you hear me say?
L,O,L,O,L,O,L.O.V.E
L,O,L,O,L,O
I'm talkin' bout
L,O,L,O,L,O,L.O.V.E
L,O,L,O,L,O
I'm talkin' bout
L,O,L,O,L,O,L.O.V.E
L,O,L,O,L,O
I'm talkin' bout
L,O,L,O,L,O,L.O.V.E
L,O,L,O,L,O
如图，OA.OB分别是小半圆的直径，且OA=OB=6cm.LBOA=°,阴影部分的面积是多少？
设外面的为S1，里面的为S2。
圆弧AB的面积=0.*π*0A²。
半圆OA的面积=半圆OB的面积=0.5*π（0.5*OA）²=0.*π*0A²
圆弧AB的面积=半圆OA的面积+半圆OB的面积=白色面积+2S2
由图得：圆弧AB的面积=白色面积+S1+S2
所以S1=S2
现在求S2的面积
设OA中点为C,半圆OA与半圆OB相交于D。
S2=2*（圆弧OD的面积-三角形OCD的面积）=2*（0.5*半圆OA的面积-三角形OCD的面积）=2*（0.*π*-0.5*3*3）=4.5π-9
黑色面积=2S2=9π-
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