dumbsearch2
  • dumbsearch2
@ASAAD123 I found magnitude of 6 and 0 for "theta=arctan(0/6)". Is A correct?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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dumbsearch2
  • dumbsearch2
anonymous
  • anonymous
no, theta=arctan(1/0)
anonymous
  • anonymous
|dw:1441114846595:dw|

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dumbsearch2
  • dumbsearch2
What?
dumbsearch2
  • dumbsearch2
Where did you get arctan(1/0) from... also, it's undefined.
anonymous
  • anonymous
I know, it's undefined, when the degree 90 or -90.
anonymous
  • anonymous
to find the angle correctly you should draw it in complex plane
dumbsearch2
  • dumbsearch2
I don't understand...
dumbsearch2
  • dumbsearch2
What did I do wrong?
anonymous
  • anonymous
sometimes, the calculator give wrong angle.
anonymous
  • anonymous
|dw:1441115341542:dw| look at the plane
dumbsearch2
  • dumbsearch2
so the answer is C?
anonymous
  • anonymous
what is the angle of 3i?
dumbsearch2
  • dumbsearch2
90 degrees
anonymous
  • anonymous
ok
dumbsearch2
  • dumbsearch2
which, in radians, is pi/2
anonymous
  • anonymous
yes, the answer is C
dumbsearch2
  • dumbsearch2
I still don't understand why theta=arctan(1/0) made 90 degrees, when for me it is undefined...
anonymous
  • anonymous
look at this graph
1 Attachment
anonymous
  • anonymous
at\[ 90\pm k 180\] degree tan x goes to infinity
dumbsearch2
  • dumbsearch2
I understand. :)
anonymous
  • anonymous
arctan(-1/0) ?
anonymous
  • anonymous
Remember: to find the angle correctly you should draw it
anonymous
  • anonymous
and know where it is in which quarter

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