anonymous
  • anonymous
can somebody help me solving this problems? http://tinyurl.com/3wne3vx
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
this is a vector problem
anonymous
  • anonymous
It's late where I am so I'm gonna hit some easy ones here. (b(i)): p dot q = ||p|| ||q|| cos(theta), where theta is the angle between the vectors. so just multiply all that you're given, and you'll get \[ 2 \pi \] Hope I helped with something
anonymous
  • anonymous
can you help me with a(iii) and b

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anonymous
  • anonymous
I already gave you a hint. can you not see the answer to a (iii)?
anonymous
  • anonymous
no
anonymous
  • anonymous
DEC and similar to AEF
anonymous
  • anonymous
and AF and DC are corresponding parts, but DC = AB
anonymous
  • anonymous
AF=kDC => AF/DC = k
anonymous
  • anonymous
and EF/DF = 1/lambda, so by the property of similar triangles...
anonymous
  • anonymous
i get it now, how about part b?
anonymous
  • anonymous
i dont understand part b
anonymous
  • anonymous
i need help to find k
anonymous
  • anonymous
kAB = AF and AF = proj FD on FA so proj FD is FD (dot) FA / |FA|^2 * FA
anonymous
  • anonymous
i dont understand it
anonymous
  • anonymous
is there another way to solve for k?
anonymous
  • anonymous
yeah sorry ignore that. I miss read the diagram
anonymous
  • anonymous
i found that DF = kp-q
anonymous
  • anonymous
rinspd how you up load the picture?
anonymous
  • anonymous
i used flick to upload the picture
anonymous
  • anonymous
do you have to paid monthly?
anonymous
  • anonymous
no its free
anonymous
  • anonymous
do you have a link my mail it yahoo
anonymous
  • anonymous
yeah
anonymous
  • anonymous
I have a problem to upload picture

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