Maths-
General
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Question

Statement-1: P is any point such that the chord of contact of tangents from P to the ellipse x to the power of 2 end exponent plus 2 y to the power of 2 end exponent equals 6 touches x to the power of 2 end exponent plus 4 y to the power of 2 end exponent equals 4 The the tangents from P of x to the power of 2 end exponent plus 2 y to the power of 2 end exponent equals 6 are at right angles and
Statement-2: The tangent from any point on the director circle of an ellipse are at right angles

  1. Statemetn-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1    
  2. Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1    
  3. Statement-1 is True, Statement-2 is False    
  4. Statement-1 is False, Statement-2 is True.    

The correct answer is: Statemetn-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1


    If P is open parentheses x subscript 1 end subscript comma y subscript 1 end subscript close parentheses then the chord of contact of tangents from P to the ellipse
    x to the power of 2 end exponent plus 2 y to the power of 2 end exponent equals 6 is x x subscript 1 end subscript plus 2 y y subscript 1 end subscript equals 6 or y equals open parentheses fraction numerator negative x subscript 1 end subscript over denominator 2 y subscript 1 end subscript end fraction close parentheses x plus fraction numerator 3 over denominator y subscript 1 end subscript end fraction
    If this touches fraction numerator x to the power of 2 end exponent over denominator 2 to the power of 2 end exponent end fraction plus fraction numerator y to the power of 2 end exponent over denominator 1 to the power of 2 end exponent end fraction equals 1 then open parentheses fraction numerator 9 over denominator y subscript 1 end subscript superscript 2 end superscript end fraction close parentheses equals 4 open parentheses fraction numerator x subscript 1 end subscript superscript 2 end superscript over denominator 4 y subscript 1 end subscript superscript 2 end superscript end fraction close parentheses plus 1
    or 9 equals x subscript 1 end subscript superscript 2 end superscript plus y subscript 1 end subscript superscript 2 end superscript Hence the locus of P open parentheses x subscript 1 end subscript comma y subscript 1 end subscript close parentheses is x to the power of 2 end exponent plus y to the power of 2 end exponent equals 9which is the equation of the director circle of fraction numerator x to the power of 2 end exponent over denominator 6 end fraction plus fraction numerator y to the power of 2 end exponent over denominator 3 end fraction equals 1

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