a=2,2a=4
s=(1/2)*4*(1/2)=1
A(1,1/2),y=kx
BC:kx-y=0
h=|k-1/2|/√(1+k^2)
x^2/4+y^2=1
x^2+4*(kx)^2=4
(1+4k^2)x^2=4
(xB-xC)^2=16/(1+4k^2)
(yB-yC)^2=(kxB-kxC)^2=16k^2/(1+...
a=2,2a=4
s=(1/2)*4*(1/2)=1
A(1,1/2),y=kx
BC:kx-y=0
h=|k-1/2|/√(1+k^2)
x^2/4+y^2=1
x^2+4*(kx)^2=4
(1+4k^2)x^2=4
(xB-xC)^2=16/(1+4k^2)
(yB-yC)^2=(kxB-kxC)^2=16k^2/(1+...