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Unformatted text preview: answer to two decimal places. 8. Let u = 3 i2 j and v =i + 3 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 of u and v . 9. A triangle has the measurements a = 7, b = 12, and α = 27 ◦ . (a) Make a (reasonably accurate) sketch of one possible triangle that ﬁts these measurements. Label all known and unknown sides and angles appropriately. (b) How many triangles ﬁt the given measurements? Find β for each possible triangle. Answer in degrees to the nearest degree. (c) Find c for each possible triangle. Round your answers to one decimal place....
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 Fall '08
 KWON
 Decimal, exact value, possible triangle

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