1.

let P be a point the first quadrant lying on the ellipse 9x^(2) +16y^(2)=144,such that the tangent at P to the ellipse is inclined at an angle135^(@)to the positive direction of x-axis Then the coordinates of P are

Answer»

` ((sqrt(143))/( 3), (1)/(4) ) `
` ( ( 8)/(9) , (sqrt(77))/( 3))`
` ((4)/(sqrt2), ( 3)/(sqrt2))`
` ((16)/(5), ( 9)/(5))`

Answer :D


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