anonymous
  • anonymous
If the cos(A) = 2/3 and the angle A is between 180 and 360 degrees, including 180 and 360 degrees, determine the sin(A) and the tan(A). Give a detailed explanation.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
Hi
anonymous
  • anonymous
cosine is adjacent and hypotenues
anonymous
  • anonymous
so right of the bat adjacent is 2 and hypotenuse is 3

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anonymous
  • anonymous
using pythagorean theorem, the third side is sqrt(5) ooo, ugly
anonymous
  • anonymous
yes, it is
anonymous
  • anonymous
now find the sine and tangent; sine=opposite/hypotenuse=sqrt(5)/3 tangent=opposite/adjacent=sqrt(5)/2
anonymous
  • anonymous
give or take; I didn't really consider the degree constraints yet
anonymous
  • anonymous
ok
anonymous
  • anonymous
I am not good with geometry at all
anonymous
  • anonymous
What would I do next?
anonymous
  • anonymous
Smartone are you here?
anonymous
  • anonymous
well, those are the numbers, and since the constraint is 180 to 360, I would make them all negative
anonymous
  • anonymous
ok, thanks, if I attach a file, would you be able to see what is in it?
anonymous
  • anonymous
Sin is negative between 180 and 360 degrees Tan is positive between 180 and 270 and negative between 270 and 360
anonymous
  • anonymous
ok, thanks
anonymous
  • anonymous
I am confused about this problem.
anonymous
  • anonymous
If cos = 2/3 then cosine is only positive between 270 and 360
anonymous
  • anonymous
So make sin negative and tan negative with the answers above.
anonymous
  • anonymous
but I do not have the answer, I do not know how to get it
anonymous
  • anonymous
Are you all with me?
anonymous
  • anonymous
darn guess noy
anonymous
  • anonymous
not*

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