Mathematics · Oct / Nov 2023 · Paper 21 · Question 17
0580
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NOT TO SCALE x° 20° 53° O D A B E C A, B and C are points on the circumference of a circle, centre O. Tangent DE touches the circle at C. Angle BCE = 53° and angle ACO = 20°. Find the value of x. x = [3]
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33 [3]
B2 for 254 + 20 + x + 53 = 360 oe or better or 53 + 20 + x + 37 + 37 = 180 oe or better or OAB = 33 or AOB = 114 or 70 and 37 correctly identified or 53 and 20 correctly identified
or B1 for any correct relevant angle identified
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