Mathematics · May / June 2021 · Paper 22 · Question 13
0580
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NOT TO SCALE B A D C O 44° x° A, B and C are points on a circle, centre O. DA and DC are tangents. Angle ° ADC 44 = . Work out the value of x. x = [3]
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68 [3]
M1 for correctly identifying 90° angle soi or DAC / DCA = 68
M1 for [obtuse angle] AOC identified as 2x soi or x = their DAC / DCA
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