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3 circle of radii 1, 2 and 3 and centres at A, B and C respectively, touch each other. Another circle whose centre is P touches all these 3 circles externally. and has radius r. Also ∠PAB = q & ∠PAC = a.
  • a)
    cosq = 
  • b)
    cos a = 
  • c)
    r = 6/23
  • d)
    r = 
Correct answer is option 'A,B,C'. Can you explain this answer?
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3 circle of radii 1, 2 and 3 and centres at A, B and C respectively, touch each other. Another circle whose centre is P touches all these 3 circles externally. and has radius r. Also ∠PAB = q & ∠PAC = a.a)cosq =b)cos a =c)r = 6/23d)r =Correct answer is option 'A,B,C'. Can you explain this answer?
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