Question:
If the chord of contact of tangents from a point $ P (x_1, y_1)$ to the circle $x^2 + y^2 = a^2$ touches the circle $ x^2 + y^2 = r^2$, then the locus of $(x_1,y_1)$ is
If the chord of contact of tangents from a point $ P (x_1, y_1)$ to the circle $x^2 + y^2 = a^2$ touches the circle $ x^2 + y^2 = r^2$, then the locus of $(x_1,y_1)$ is
Updated On: Jul 6, 2022
- a circle
- a st. line
- an ellipse
- none of these.
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The Correct Option is D
Solution and Explanation
Answer (d) none of these.
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