3 circle of radii 1, 2 and 3 and centres...

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 `anglePAB = theta` & `anglePAC = alpha`.

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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 `anglePAB = theta` & `anglePAC = alpha`.

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