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A B' is a chord of a circle with centre ...

A B' is a chord of a circle with centre O.
'//_A O B=70^circ'
'A B=6 cm'. Find the diameter of the circle.
'[sin 35^circ=0.57]'
'(##VPU_TTT_MAT_X_P01_C05_E06_004_Q01##)'

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