If the chord of contact of the tangents drawn from the point `(h , k)`to the circle `x^2+y^2=a^2`subtends a right angle at the center, then prove that `h^2+k^2=2a^2dot`A. `h^(2)+k^(2)=a^(2)`B. `2(h^(2)+k^(2))=a^(2)`C. `h^(2)-k^(2)=a^(2)`D. `h^(2)+k^(2)=2a^(2)`

If the chord of contact of the tangents drawn from the point `(h , k)`

1.	If the chord of contact of the tangents drawn from the point `(h , k)`to the circle `x^2+y^2=a^2`subtends a right angle at the center, then prove that `h^2+k^2=2a^2dot`A. `h^(2)+k^(2)=a^(2)`B. `2(h^(2)+k^(2))=a^(2)`C. `h^(2)-k^(2)=a^(2)`D. `h^(2)+k^(2)=2a^(2)`
Answer» Correct Answer - D

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If the chord of contact of the tangents drawn from the point `(h , k)`to the circle `x^2+y^2=a^2`subtends a right angle at the center, then prove that `h^2+k^2=2a^2dot`A. `h^(2)+k^(2)=a^(2)`B. `2(h^(2)+k^(2))=a^(2)`C. `h^(2)-k^(2)=a^(2)`D. `h^(2)+k^(2)=2a^(2)`

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