anonymous
  • anonymous
Suppose a triangle has two sides of length 42 and 35, and that the angle between these two sides is 120. What is the length of the third side of the triangle?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
anonymous
  • anonymous
help please
anonymous
  • anonymous
can you help?

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More answers

anonymous
  • anonymous
hey m8
anonymous
  • anonymous
hmm i will try
anonymous
  • anonymous
Alright please
arindameducationusc
  • arindameducationusc
I am trying too...
anonymous
  • anonymous
Thank you both.
anonymous
  • anonymous
I am like stressing because of this test I cant pass
anonymous
  • anonymous
ok so you use the law of cosine i think
anonymous
  • anonymous
yea I did but I got lost after
anonymous
  • anonymous
\[c^2=a^2+b^2\]
anonymous
  • anonymous
oh i forgot the -2abcos(o)
anonymous
  • anonymous
anyways \[c^2=32^2+35^2−2(32)(35)\cos(120)\]
arindameducationusc
  • arindameducationusc
cos A=b^2+c^2-c^2/2ab This is the cosine formula, Isn't it? @Icedragon50
anonymous
  • anonymous
where did you get 32?
anonymous
  • anonymous
\[c^2=1024+1225-2240(-\frac{ 1 }{ 2 })=3369\]
anonymous
  • anonymous
c=\[√3369=58.04\]
anonymous
  • anonymous
and there ya go!
anonymous
  • anonymous
@arindameducationusc ya
anonymous
  • anonymous
Thank you so much m8
anonymous
  • anonymous
np :)
anonymous
  • anonymous
g'night I'm tired xD
anonymous
  • anonymous
Same its 1 lol
anonymous
  • anonymous
bout to play league of legends

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