JEE MATHEMATICS MCQ: CIRCLES

1 Easy

1 of 1

Application +4 | -1

The tangent at any point to the circle

x^2+y^2

=r^2

meets the coordinate axes at

A

and

B

. If lines drawn parallel to the coordinate axes through

A

and

B

intersect at

P

, the locus of

P

View answer and explanation

Correct option: C

\frac{1}{x^2}+\frac{1}{y^2}=\frac{1}{r^2}

Option C (

\frac{{1}}{{x^2}}+\frac{{1}}{{y^2}}=\frac{{1}}{{r^2}}

) is correct because it represents the locus of point P based on the tangent to the circle and the parallel lines.

More Questions from CIRCLES

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{\left( {{\alpha ^2}{x^2} - 2\alpha \mathrm{ }x + 1} \right)^{51}},

x

\left( {\alpha ,2{\alpha ^2}} \right)

{x^2} + {y^2} = 4,

{x^2} + {y^2} - 2x + 4y - 4 = 0

{x^2} + {y^2} = {a^2}

\left( {{x_1},{y_1}} \right)

\quad \alpha, \beta

\gamma

P, Q

x^2+y^2=1

A

(-1,0)

A P, A Q

A R

G P

\cos \alpha / 2, \cos \beta / 2

\cos \gamma / 2

x+y=6

x+2 y=4

x+y=5

x-y=1

9 \pi