Mathematics · Oct / Nov 2021 · Paper 22 · Question 4
0580
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58° 86° x° A D C B NOT TO SCALE Triangle ABC and triangle ACD are isosceles. Angle DAB = 86° and angle ADC = 58°. Find the value of x. x = [3]
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79 nfww [3]
M2 for x + x + 58 + 58 + 86 = 360 oe or 86 – (180 – 2 × 58) implied by CAB = 22
or B1 for DCA = 58 or BCA = x or DAC = 64
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