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Mathematics, 22.11.2021 17:00 DwayneLeonard4088

Let ABC be a triangle with m(Â) = 90°, m(Â) = 30° and M is the midpoint of the BC side. Let D be the symmetry of B with respect to AC and N is the foot of the perpendicular from A to DC. If AM = 15 cm, then DN = ? A) 7.5 cm
B) 10 cm
C) 12.5 cm
D) 9 cm
E) 12 cm

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