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Unformatted text preview: c correct to one decimal place. 129 ◦ c 3 . 5 ±t 5 . 1 ±t 7. Let u = 4 i3 j and v =2 i + j . (a) Find u + v . (b) Find  u  . (c) Sketch and label the vectors u , v , and u + v on the grid shown below. Place them in an arrangement that illustrates that u + v is the resultant o± u and v . 8. A triangle has the measurements a = 8, b = 13, and α = 31 ◦ . (a) Make a (reasonably accurate) sketch of one possible triangle that Fts these measurements. Label all known and unknown sides and angles appropriately. (b) How many triangles Ft the given measurements? ±ind β for each possible triangle. Answer in degrees to the nearest degree. (c) ±ind c for each possible triangle. Round your answers to one decimal place. 15...
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 Fall '08
 KWON
 Math, Decimal, possible triangle

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