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Byju's Answer
Standard X
Physics
Pole of a mirror
If α and β ar...
Question
If α and β are the eccentric angles of the extremities of a focal chord of an ellipse, then the eccentricity of the ellipse is
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Q.
If
α
and
β
are the eccentric angles of the extremities of a focal chord of an ellipse, then the eccentricity of the ellipse is:
Q.
If
α
,
β
are the eccentric angles of the extremities of a focal chord of an ellipse, then eccentricity of the ellipse is
Q.
If
α
and
β
are the eccentric angles of the extremities of a focal chord of an ellipse of eccentricity e then
cos
(
α
−
β
2
)
=
Q.
α
and
β
are the eccentric angles of the extremities of a focal chord of the ellipse
x
2
a
2
+
y
2
b
2
=
1
, then
cos
2
(
α
−
β
2
)
cos
2
(
α
+
β
2
)
=
Q.
The eccentric angles of extremities of a focal chord (other than Major axis) of an ellipse
x
2
a
2
+
y
2
b
2
=
1
are
θ
1
and
θ
2
.
If the eccentricity of the ellipse are
e
1
and
e
2
for the conditions
a
>
b
and
b
>
a
respectively, then
cos
2
(
θ
1
−
θ
2
2
)
(
1
e
2
1
+
1
e
2
2
)
is
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