Q18. In ABC, E and D are points on AB and AC respectively, such that ADE = B. If AB = 3.8 cm, AE = 3.6 cm, BE = 2.1 cm and BC = 4.2 cm, then find DE.
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https://www.meritnation.com/ask-answer/question/in-triangle-abc-e-and-d-are-the-points-on-ab-and-ac-respecti/triangles/8396377
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