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Mathematics
Mathematics
Problem
Let the point
R
(
k
,
2
)
R(k,2)
R
(
k
,
2
)
, with
k
>
0
k>0
k
>
0
, lie on the ellipse
x
2
16
+
y
2
9
=
1.
\frac{x^{2}}{16}+\frac{y^{2}}{9}=1.
16
x
2
+
9
y
2
=
1.
The value of
k
k
k
is a)
2
5
3
\dfrac{2\sqrt5}{3}
3
2
5
b)
4
7
3
\dfrac{4\sqrt7}{3}
3
4
7
c)
4
5
3
\dfrac{4\sqrt5}{3}
3
4
5
d)
4
3
3
\dfrac{4\sqrt3}{3}
3
4
3
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