1 The diagram below shows a circle with centre at O. XZ and YZ are both tangents to the circle. Calculate, giving detailed reasons, the size of the angle marked p. (3 marks)
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Step 1
Since XZ and YZ are tangents to the circle, they are perpendicular to the radii at the points of tangency. Therefore, ∠XOI = ∠YOI = 90°, where I is the point of tangency on XZ and O is the center of the circle. Show more…
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