Maths-
General
Easy

Question

The equation x to the power of 2 end exponent minus 3 x y plus lambda y to the power of 2 end exponent plus 3 x minus 5 y plus 2 equals 0 when l is a real number, represents a pair of straight lines. If q is the angle between these lines, then C o s e c to the power of 2 end exponent invisible function application theta equals

  1. 3    
  2. 9    
  3. 10    
  4. 100    

The correct answer is: 10


    s i n invisible function application theta equals fraction numerator 2 square root of h to the power of 2 end exponent minus a b end root over denominator square root of left parenthesis a minus b right parenthesis to the power of 2 end exponent plus 4 h to the power of 2 end exponent end root end fraction

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