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Prove that the angle between the lines j...

Prove that the angle between the lines joining the origin to the points of intersection of the straight line `y=3x+2` with the curve `x^2+2x y+3y^2+4x+8y-11=0` is `tan^(-1)((2sqrt(2))/3)`

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The correct Answer is:
`therefore " " theta =tan ^(-1) (2sqrt(2)/(3))`
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