JEE Main202311 Apr 2023Evening ShiftMathematicsHyperbolaActual
Let the tangent to the parabola y 2 = 12 x at the point 3 , α be perpendicular to the line 2 x + 2 y = 3 . Then the square of distance of the point 6 , - 4 from the normal to the hyperbola α 2 x 2 - 9 y 2 = 9 α 2 at its point α - 1 , α + 2 is equal to .............
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Step-by-step solution
Given, The tangent to the parabola y 2 = 12 x at the point 3 ,   α be perpendicular to the line 2 x + 2 y = 3 So, Slope of tangent = 1 = 6 α ⇒ α = 6 So, equation of hyperbola will be, 36 x 2 - 9 y 2 = 324 ⇒ x 2 9 - y 2 36 = 1 Now equation of tangent at 5 , 8 will be, 5 x 9 - 8 y 36 = 1 ⇒ 5 x - 2 y = 9 So, slope of normal = - 2 5 Now finding, equation of normal y - 8 = - 2 5 x - 5 ⇒ 5 y - 40 = - 2 x + 10 ⇒ 5 y + 2 x = 50 Now finding,distance from 6 ,   - 4 , we