anonymous
  • anonymous
In ∆ABC, if a = 8.75 centimeters, c = 4.26 centimeters, and m B = 87°, what is the length of b to two decimal places?
Geometry
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anonymous
  • anonymous
In ∆ABC, if a = 8.75 centimeters, c = 4.26 centimeters, and m B = 87°, what is the length of b to two decimal places?
Geometry
katieb
  • katieb
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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anonymous
  • anonymous
A)8.92 CM B)9.41CM C)9.53CM D)13.01 E)15.36
Itsyacoolgrl
  • Itsyacoolgrl
you will need the law of cosines to solve it b2=a2+c2−2a×c×cos(B) just substitute your values
Itsyacoolgrl
  • Itsyacoolgrl
Solution: cosB= (a^2+c^2-b^2)/2ac b = sqrt(a^2+c^2-2ac*cosB) = sqrt(8.75^2+4.26^2-2*8.75*4.26*cos87) =9.53 So b=9.53cm

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anonymous
  • anonymous
my teacher hasn't taught us that yet and shes giving us stuff to do can you walk me through
Itsyacoolgrl
  • Itsyacoolgrl
Really? how does she expect you to solve it if you don't know "sohcahtoa" What grade are you in?
anonymous
  • anonymous
I don't know , ima a sophomore
Itsyacoolgrl
  • Itsyacoolgrl
Hmmm, sorry i'm a freshman. Is this for geometry?
anonymous
  • anonymous
yes
Itsyacoolgrl
  • Itsyacoolgrl
That's weird :/ I learned sohcahtoa in my freshman year, (I'm going to be a sophomore in the upcoming year). I don't know how to help you but goodluck!

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