1.Length of tangent from any point on x2+y2+2fy+λ=0x^2+y^2+2fy+\lambda=0x2+y2+2fy+λ=0 to x2+y2+2fy+μ=0x^2+y^2+2fy+\mu=0x2+y2+2fy+μ=0 (μ>λ>0\mu>\lambda>0μ>λ>0) isa.μ−λ\sqrt{\mu-\lambda}μ−λb.μ+λ\sqrt{\mu+\lambda}μ+λc.μ2−λ2\sqrt{\mu^2-\lambda^2}μ2−λ2d.μ+λ\mu+\lambdaμ+λLogin to continueOnly logged in users canattempt or see the solution.
