Question 17 — IGCSE 0580 Oct/Nov 2023 Paper 12
Cambridge IGCSE Mathematics 0580, Core tier, non-calculator. Topic: Geometry · Angles using geometrical properties. Worth 4 marks.
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Question text
17
A B NOT TO
O
SCALE
C
A, B and C are points on a circle, centre O.
(a) Draw a tangent to the circle at point A. [1]
(b) The circumference of the circle is 22.3 cm.
Calculate the radius of the circle.
............................................ cm [2]
(c) Give a geometrical reason why angle BCA is 90°.
..................................................................................................................................................... [1]
© UCLES 2023 0580/12/O/N/23
7
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