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Problem 5 (length of median). Let ABC triangle, A' (BC) such that AA' is a median. Prove that |AA' | = |2|AB|2 +2|AC|2 |BC|
Problem 5 (length of median). Let ABC triangle, A' (BC) such that AA' is a median. Prove that |AA' | = |2|AB|2 +2|AC|2 |BC| 4 Hint. Use the cosine theorem to write up a formula for AA'|. Eliminate the cosine from the formula you obtained using the cosine theorem applied in another triangle.
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Mechanics of Materials
Authors: James M. Gere, Barry J. Goodno
7th edition
495438073, 978-0495438076
