Mathematics, 21.03.2021 20:00 emmacox069
In the diagram below, is the centre of the circle. AB is a diameter of the circle. Chord CF produced
meets chord EB produced at D. Chord EC is parallel to chord BF. CO and AC are produced.
(Feb/March 2012)
Let Ô = 2x
= 20
N
2x
6
f
2
3
E
B В
D
4.1
Determine, in terms of x, the size of Êi.
4.2
Prove that DF=BD.
(4)
4.3 Show that Ĉi = Ĉs.
4.4: If DF = 5 cm and OA = 6 cm, calculate area ABFD : area AAOC.
(16)
Answers: 3
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