, 15.01.2020 04:31, sidemen10117

# Abcd is a trapezoid (ad∥ bc). bc = 5 cm, m∠acd = m∠abc = 90°, m∠bac = 30°. find the length of ad (the picture is not drawn to scale).

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Mathematics, 21.06.2019 15:00, lilay30
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