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anonymous
 one year ago
an antique map was found in the attic of a local courthouse. it shows some measurements from a local farm that was divided into 5 parts. some of the measurements have faded with age, so you must find the remaining measurements, as well as calculate the total area and perimeter of the outside property. all lengths are measured in miles.
anonymous
 one year ago
an antique map was found in the attic of a local courthouse. it shows some measurements from a local farm that was divided into 5 parts. some of the measurements have faded with age, so you must find the remaining measurements, as well as calculate the total area and perimeter of the outside property. all lengths are measured in miles.

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phi
 one year ago
Best ResponseYou've already chosen the best response.1we need more info. can you make a screen shot of the entire question?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0https://www.georgiastandards.org/GeorgiaStandards/Frameworks/PreCalculusUnit3.pdf

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the question is on the link but its all the way at the bottom znd it has help on it but i dont understand it

phi
 one year ago
Best ResponseYou've already chosen the best response.1that is a link to 43 pages.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0you have to scroll all the way down to the bottom

phi
 one year ago
Best ResponseYou've already chosen the best response.1ok. It sounds like they want all the angles and sides for each of the triangles

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yeah i think so but im not sure how

phi
 one year ago
Best ResponseYou've already chosen the best response.1Mostly the Law of Cosines and Law of Sines Let's start in the lower right. that is a right triangle with sides 3 and 4 use pythagoras to find the hypotenuse.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so i would do a^2+b^2=c^2

phi
 one year ago
Best ResponseYou've already chosen the best response.1yes, and we are looking for c

phi
 one year ago
Best ResponseYou've already chosen the best response.1yes, so label side AC with length 5

phi
 one year ago
Best ResponseYou've already chosen the best response.1the few pages in front of the last page seem to go through the solution

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i saw that to but i dont really understand how they did that

phi
 one year ago
Best ResponseYou've already chosen the best response.1Say the job is to find the sides of all 5 triangles. so far you know the sides of triangle ABC

phi
 one year ago
Best ResponseYou've already chosen the best response.1now look at triangle ACD. we have two sides and we need to find the 3rd side. Do we have enough info to do that ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0we use law of cosine?

phi
 one year ago
Best ResponseYou've already chosen the best response.1yes. If we see sideangleside with numbers, then we can use the Law of Cosines to find the unknown side. Do you know how to do that to find side AD ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[5^2+3.1623^22(5)(3.1623)\cos(71.5651\]

phi
 one year ago
Best ResponseYou've already chosen the best response.1that is c^2 what do you get for c^2 and then c ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dont you get 35.031.623*0.31 and then put that in the calculator?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0and i got 25.1 but i have to square root it

phi
 one year ago
Best ResponseYou've already chosen the best response.1I would use the calculator to do the whole computation \[ 5^2+3.1623^22(5)(3.1623)\cos(71.565)\]

phi
 one year ago
Best ResponseYou've already chosen the best response.1you don't want to round any numbers until the very end.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0well when i square root 25 i got 5

phi
 one year ago
Best ResponseYou've already chosen the best response.1so label side AD 5 it looks like triangle ACD is isosceles (2 sides the same length) that means we know the base angles are both 71.5651 and the angle CAD is 180  2*71.5651 I am not sure we we to write that down, but we do know it.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so angle a is the same as angle c (71.5652)

phi
 one year ago
Best ResponseYou've already chosen the best response.1If by angle a and angle c you mean < CDA and < ACD

phi
 one year ago
Best ResponseYou've already chosen the best response.1now triangle ADE we have 2 sides, and an angle, but it is the wrong angle. However, we can find the "middle angle". Any ideas how?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0no i dont know anything about the middle angle

phi
 one year ago
Best ResponseYou've already chosen the best response.1Do you see we want to find side DE ? to do that we can use side AE, angle DAE, side AD and the Law of Cosines but we need angle DAE

phi
 one year ago
Best ResponseYou've already chosen the best response.1When I see we have sides and angles, and need an angle, I would try using the Law of Sines. What angle can we find if we use the Law of Sines ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[cosc=a^2+b^2c^2/2ab\]

phi
 one year ago
Best ResponseYou've already chosen the best response.1we can't use that because we don't know two things (angle C and side c) I would use the Law of Sines to find angle ADE

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so then sin=a/sinA=b/sinB

phi
 one year ago
Best ResponseYou've already chosen the best response.1yes. can you find angle ADE ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0remind me again is the a the side and the A is the degree right

phi
 one year ago
Best ResponseYou've already chosen the best response.1yes, you can only take sines of angles. you can write the Law of Sines as \[ \frac{a}{\sin A} = \frac{b}{\sin B}\] or as \[ \frac{\sin A}{a} = \frac{\sin B}{b}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok \[\sin=\frac{ 7.8102 }{ sinA }=\frac{ 5 }{ \sin38.845 }\]

phi
 one year ago
Best ResponseYou've already chosen the best response.1ok except I would not have that first sin = part just \[ \frac{ 7.8102 }{ \sin A }=\frac{ 5 }{ \sin38.845 }\]

phi
 one year ago
Best ResponseYou've already chosen the best response.1typo: \[ \frac{ 7.8102 }{ \sin A }=\frac{ 5 }{ \sin38.8845 } \]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh ok and then sin(38.845 is equal to 0.62 so you have \[\frac{ 7.8102 }{ ?sinA}=\frac{ 5 }{ 0.62 }\]

phi
 one year ago
Best ResponseYou've already chosen the best response.1it's sin 38.8845 (not 38.845) when you do the calculation you should keep at least 5 decimals (I would keep all that the calculator uses)

phi
 one year ago
Best ResponseYou've already chosen the best response.1The way I would do it is write it as \[ \frac{\sin A}{7.8102} = \frac{\sin 38.8845}{5} \] and then multiply both sides by 7.8102 to get \[ \sin A =\frac{\sin 38.8845}{5}\cdot 7.8102\] now use a calculator to find sin A

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i put that in and it says error

phi
 one year ago
Best ResponseYou've already chosen the best response.1you can use google. type into the google search window sin 38.8845 deg * 7.8102/5=

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay thank you for everything i got the rest your the best
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