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MathsHardNumerical2023 Β· 06 Apr Shift 1

Q83.A circle passing through the point 𝑃𝛼, 𝛽 in the first quadrant touches the two coordinate axes at the points 𝐴 and 𝐡. The point 𝑃 is above the line 𝐴𝐡. The point 𝑄 on the line segment 𝐴𝐡 is the foot of perpendicular from 𝑃 on 𝐴𝐡. If 𝑃𝑄 is equal to 11 units, then the value of 𝛼𝛽 is _______

What This Question Tests

This problem involves setting up the equation of a circle touching axes, finding the line AB, calculating the distance PQ using the given point P and the line AB, and then solving for the product Ξ±Ξ².

Concepts Tested

Circle touching coordinate axesDistance from a point to a lineProperties of tangents

Formulas Used

Equation of circle (x-r)^2 + (y-r)^2 = r^2

Distance from point (x0, y0) to line Ax+By+C=0 is |Ax0+By0+C|/√(A^2+B^2)

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