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JEE Mains · Maths · STD 11 - 10.1 circle and system of circle

જો ધન \(x-\)અક્ષ તથા વર્તુળ \((x-2)^{2}+(y-3)^{2}=25\) ના \((5, 7)\) બિંદુએ અભિલંબ અને સ્પર્શકથી બનતા ત્રિકોણનું ક્ષેત્રફળ \(A\) હોય, તો \(24A =........ .\)

  1. A \(1140\)
  2. B \(1225\)
  3. C \(2450\)
  4. D \(612\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(1225\)

Step-by-step Solution

Detailed explanation

Equation of normal \(4 x-3 y+1=0\) and equation of tangents \(3 x+4 y-43=0\) Area of triangle \(=\frac{1}{2}\left(\frac{43}{3}+\frac{1}{4}\right) \times(7)\) \(=\frac{1}{2}\left(\frac{172+3}{12}\right) \times 7\) \(A =\frac{1225}{24}\) \(24 A =1225\)
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