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shane.williams
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Tangent curve
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Cosine curve
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Sine curve
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Alternate segment theorem
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Two tangents to a circle
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Angle between the tangent and the radius
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Angle in a semi-circle
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Angles in cyclic quadrilateral
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Angles in the same segment
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Angles subtended at the centre
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Angles in a triangle
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Circle theorems
Book
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Interesting circles
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Trigonometry
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