The equation \[{{x}^{2}}-3xy+\lambda {{y}^{2}}+3x-5y+2=0\] when \[\lambda \]is a real number, represents a pair of straight lines. If \[\theta \] is the angle between the lines, then \[\text{cose}{{\text{c}}^{2}}\theta \]= [EAMCET 1992]

The equation \[{{x}^{2}}-3xy+\lambda {{y}^{2}}+3x-5y+2=0\] when \[\lam

1.	The equation \[{{x}^{2}}-3xy+\lambda {{y}^{2}}+3x-5y+2=0\] when \[\lambda \]is a real number, represents a pair of straight lines. If \[\theta \] is the angle between the lines, then \[\text{cose}{{\text{c}}^{2}}\theta \]= [EAMCET 1992]
A.	3
B.	9
C.	10
D.	100
Answer» D. 100

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The equation \[{{x}^{2}}-3xy+\lambda {{y}^{2}}+3x-5y+2=0\] when \[\lambda \]is a real number, represents a pair of straight lines. If \[\theta \] is the angle between the lines, then \[\text{cose}{{\text{c}}^{2}}\theta \]= [EAMCET 1992]

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