📄 angle.mht
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=A1=A4tan=A6=C2 </P></TD>
<TD width=3D"50%" colSpan=3D2>
<P> =20
=
2tan(=A6=C1/2)<BR>sin=A6=C1=A3=BD=A1=AA=A1=AA=A1=AA=A1=AA=A1=AA=A1=AA<BR>=
=20
1=A3=ABtan<SUP>2</SUP>(=A6=C1/2)</P>
=
<P> 1=A3=ADtan<SUP>2</SUP>(=A6=C1=
/2)<BR>cos=A6=C1=A3=BD=A1=AA=A1=AA=A1=AA=A1=AA=A1=AA=A1=AA<BR>  =
; =20
1=A3=ABtan<SUP>2</SUP>(=A6=C1/2)</P>
=
<P> 2tan(=A6=C1/2)<BR>tan=A6=C1=A3=
=BD=A1=AA=A1=AA=A1=AA=A1=AA=A1=AA=A1=AA<BR> =
1=A3=ADtan<SUP>2</SUP>(=A6=C1/2)</P></TD></TR>
<TR>
<TD colSpan=3D4> </TD></TR>
<TR>
<TD colSpan=3D2>
<DIV =
align=3Dcenter><STRONG>=B0=EB=BD=C7=B5=C4=D5=FD=CF=D2=A1=A2=D3=E0=CF=D2=BA=
=CD=D5=FD=C7=D0=B9=AB=CA=BD</STRONG></DIV></TD>
<TD colSpan=3D2>
<DIV =
align=3Dcenter><STRONG>=C8=FD=BD=C7=BA=AF=CA=FD=B5=C4=BD=B5=C3=DD=B9=AB=CA=
=BD</STRONG></DIV></TD></TR>
<TR>
<TD colSpan=3D2><IMG height=3D139=20
src=3D"http://www.521yy.com/tools/maths/OLE287.gif" =
width=3D300></TD>
<TD colSpan=3D2><IMG height=3D83=20
src=3D"http://www.521yy.com/tools/maths/OLE285.gif" =
width=3D127></TD></TR>
<TR>
<TD colSpan=3D2> </TD>
<TD colSpan=3D2> </TD></TR>
<TR>
<TD colSpan=3D2>
<DIV =
align=3Dcenter><STRONG>=B6=FE=B1=B6=BD=C7=B5=C4=D5=FD=CF=D2=A1=A2=D3=E0=CF=
=D2=BA=CD=D5=FD=C7=D0=B9=AB=CA=BD</STRONG></DIV></TD>
<TD colSpan=3D2>
<DIV =
align=3Dcenter><STRONG>=C8=FD=B1=B6=BD=C7=B5=C4=D5=FD=CF=D2=A1=A2=D3=E0=CF=
=D2=BA=CD=D5=FD=C7=D0=B9=AB=CA=BD</STRONG></DIV></TD></TR>
<TR>
<TD colSpan=3D2>
<P>sin2=A6=C1=A3=BD2sin=A6=C1cos=A6=C1</P>
=
<P>cos2=A6=C1=A3=BDcos<SUP>2</SUP>=A6=C1=A3=ADsin<SUP>2</SUP>=A6=C1=A3=BD=
2cos<SUP>2</SUP>=A6=C1=A3=AD1=A3=BD1=A3=AD2sin<SUP>2</SUP>=A6=C1<BR><BR>&=
nbsp; =20
=
2tan=A6=C1<BR>tan2=A6=C1=A3=BD=A1=AA=A1=AA=A1=AA=A1=AA=A1=AA<BR>&nb=
sp; =20
1=A3=ADtan<SUP>2</SUP>=A6=C1<BR></P></TD>
<TD colSpan=3D2>
=
<P>sin3=A6=C1=A3=BD3sin=A6=C1=A3=AD4sin<SUP>3</SUP>=A6=C1</P>
=
<P>cos3=A6=C1=A3=BD4cos<SUP>3</SUP>=A6=C1=A3=AD3cos=A6=C1</P>
=
<P> 3tan=A6=C1=A3=ADtan<SUP>3</S=
UP>=A6=C1<BR>tan3=A6=C1=A3=BD=A1=AA=A1=AA=A1=AA=A1=AA=A1=AA=A1=AA<BR>&nbs=
p; =20
1=A3=AD3tan<SUP>2</SUP>=A6=C1</P></TD></TR>
<TR>
<TD colSpan=3D2> </TD>
<TD colSpan=3D2> </TD></TR>
<TR>
<TD colSpan=3D2>
<DIV =
align=3Dcenter><STRONG>=C8=FD=BD=C7=BA=AF=CA=FD=B5=C4=BA=CD=B2=EE=BB=AF=BB=
=FD=B9=AB=CA=BD</STRONG></DIV></TD>
<TD colSpan=3D2>
<DIV =
align=3Dcenter><STRONG>=C8=FD=BD=C7=BA=AF=CA=FD=B5=C4=BB=FD=BB=AF=BA=CD=B2=
=EE=B9=AB=CA=BD</STRONG></DIV></TD></TR>
<TR>
<TD=20
=
colSpan=3D2> &=
nbsp; =A6=C1=A3=AB=A6=C2 &n=
bsp; =A6=C1=A3=AD=A6=C2<BR>sin=A6=C1=A3=ABsin=A6=C2=
=A3=BD2sin=A1=AA=A3=AD=A3=AD=A1=A4cos=A1=AA=A3=AD=A1=AA<BR> &n=
bsp; &nb=
sp; 2 &nb=
sp; 2<BR>  =
; =A6=C1=A3=AB=A6=C2 =
=A6=C1=A3=AD=A6=C2<BR>sin=A6=C1=A3=ADsin=A6=
=C2=A3=BD2cos=A1=AA=A3=AD=A3=AD=A1=A4sin=A1=AA=A3=AD=A1=AA<BR>  =
; =
2 =
2<BR> &n=
bsp; =A6=C1=A3=AB=A6=C2 &nb=
sp; =A6=C1=A3=AD=A6=C2<BR>cos=A6=C1=A3=ABcos=
=A6=C2=A3=BD2cos=A1=AA=A3=AD=A3=AD=A1=A4cos=A1=AA=A3=AD=A1=AA<BR> &n=
bsp; &nb=
sp; 2 &nb=
sp; 2<BR>  =
; =A6=C1=A3=AB=
=A6=C2 =A6=C1=A3=AD=A6=C2<BR>cos=
=A6=C1=A3=ADcos=A6=C2=A3=BD=A3=AD2sin=A1=AA=A3=AD=A3=AD=A1=A4sin=A1=AA=A3=
=AD=A1=AA<BR> =
2 =
2</TD>
<TD=20
=
colSpan=3D2> &=
nbsp;1<BR>sin=A6=C1=20
=
=A1=A4cos=A6=C2=A3=BD-[sin=A3=A8=A6=C1=A3=AB=A6=C2=A3=A9=A3=ABsin=A3=A8=A6=
=C1=A3=AD=A6=C2=A3=A9]<BR>  =
; 2<BR> &=
nbsp; 1<BR>cos=A6=C1=20
=
=A1=A4sin=A6=C2=A3=BD-[sin=A3=A8=A6=C1=A3=AB=A6=C2=A3=A9=A3=ADsin=A3=A8=A6=
=C1=A3=AD=A6=C2=A3=A9]<BR>  =
; 2<BR> &=
nbsp; 1<BR>cos=A6=C1=20
=
=A1=A4cos=A6=C2=A3=BD-[cos=A3=A8=A6=C1=A3=AB=A6=C2=A3=A9=A3=ABcos=A3=A8=A6=
=C1=A3=AD=A6=C2=A3=A9]<BR>  =
; 2<BR> &=
nbsp; 1<BR>sin=A6=C1=20
=A1=A4sin=A6=C2=A3=BD=A3=AD=20
=
-[cos=A3=A8=A6=C1=A3=AB=A6=C2=A3=A9=A3=ADcos=A3=A8=A6=C1=A3=AD=A6=C2=A3=A9=
]<BR> &n=
bsp; 2<BR></TD></TR>
<TR>
<TD colSpan=3D4> </TD></TR>
<TR>
<TD colSpan=3D4>
<DIV align=3Dcenter><STRONG>=BB=AFasin=A6=C1=20
=
=A1=C0bcos=A6=C1=CE=AA=D2=BB=B8=F6=BD=C7=B5=C4=D2=BB=B8=F6=C8=FD=BD=C7=BA=
=AF=CA=FD=B5=C4=D0=CE=CA=BD=A3=A8=B8=A8=D6=FA=BD=C7=B5=C4=C8=FD=BD=C7=BA=AF=
=CA=FD=B5=C4=B9=AB=CA=BD=A3=A9</STRONG></DIV></TD></TR>
<TR>
<TD colSpan=3D4>
<DIV align=3Dcenter><IMG height=3D70=20
src=3D"http://www.521yy.com/tools/maths/OLE291.gif"=20
width=3D500></DIV></TD></TR></TBODY></TABLE>
<TABLE width=3D"100%" align=3Dcenter border=3D0>
<TBODY>
<TR>
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