Tangents are drawn from the point (h,k) to ^circle `x^2+y^2 =a^2`; Prove that the area of the ...

To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW Tangents are drawn from the point (h,k) to ^circle `x^2+y^2 =a^2`; Prove that the area of the triangle formed by them and the straight line joining their point of contact is `(a (h^2+k^2-a^2)^(3/2))/ (h^2 + k^2)`