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quiz4_answer - Math 251 Section 3 Spring 2010 Quiz 4 Name...

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Unformatted text preview: Math 251 Section 3 Spring 2010 Quiz 4 Name Work individually to answer these questions/5 pts) .1, 2> b= <— 1 3 5> 1') |a) : 2 )bl— v 5 and the angle between a and b IS 371/4. (N:ote cos(7r/4= 0) va’ 4-1-1111-31135: v++3110=01 (11) 01-10: l-SwsEA‘rl: 2~5- 9”; 2 -51 (3 (pts) Given thIee points P(2 0 —1), Q(4,1,0)'a11d R(3, —l, 1), find (1) )133 and 13?? and 11) )w x P—fé and verify that it is orthogonal to both P73 and 137%. 111) )Find the 211621 of the t11angle APQR. ”.1 PO. 3 4‘1““3-11‘0, O"'L’|)7 :(2, 1):; "‘3 >- 41) '1, 2) :1JK\: 1C“)r 'c 1 01 1-11 (1;) a=<31’$,”)>7‘<l/);\7=~D (Fa XPR)‘PP\ = <3.’3,«3>3<:, “1,27 1: 9n. F‘xm F; Orthojcnu‘l 1;, botk'fl W} PK. U") Th0 turf/6v bf “Hu tr-MOH/ :lek 5 2:)901131’3)" 3: J 341'4—3312—11 31‘ : ‘3J37 = 3- (1 —m1)+ 100(4 "‘) + L ('1") z [/2.) ...
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