6. the figure shows a circle, centre o. ac is a tangent
to the circle at a and obc is a straigh...
Mathematics, 13.01.2020 19:31 10033636
6. the figure shows a circle, centre o. ac is a tangent
to the circle at a and obc is a straight line.
given that ac = 18 cm and bc = 12 cm, find
(1) the radius of the circle,
(ii) angle aob
(iii) the area of the shaded region.
Answers: 2
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