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In the figure, PA, 'PB' are tarigents th...

In the figure, PA, 'PB' are tarigents through 'A' and 'B' of a circle with centre 'O'.
If the radius of the cirčle is 'r', then prove. that 'O P xx O Q=r^2'.
'(##VPU_TTT_MAT_X_P02_C07_E07_004_Q01##)'

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