anonymous
  • anonymous
how do i determine the height of a triangle with only the length nd sides?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
The base of the tent measures 96 inches wide, and the length from the top point of the tent to the corners of the base is 102 inches.
anonymous
  • anonymous
What is the length of the pole that Daniel needs to support the middle of the tent?
anonymous
  • anonymous
Use pythagoras' theorem :)

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anonymous
  • anonymous
how do u suppose i do dat?
anonymous
  • anonymous
imagine a line from the top point to the middle of the base. You now have two right angled triangles. Use pythagoras' theorem on one to find the height (the line you've drawn in) a^2+b^2=c^2 a=96/2=48 b=the height c=102 48^2+b^2=102^2 2304+b^2=10404 b^2=10404-2304=8100 b=sqrt(8100) b=90
anonymous
  • anonymous
A. 72 inches B. 180 inches C. 96 inches D. 90 inches
anonymous
  • anonymous
b=90, so b is answer D! Do you understand it?
anonymous
  • anonymous
1 Attachment
anonymous
  • anonymous
use pythagoras' theorem again. in this case: a=sqrt(40) b=3 c=z on the diagram so: sqrt(40)^2+3^2=c^2 40+9=c^2 49=c^2 c=sqrt(49) c=7 :)
anonymous
  • anonymous
1 Attachment
anonymous
  • anonymous
are you actually understanding this or just taking the answers? if you're learning you should be able to work this out now. remember, for right angled triangles, just use pythagoras' theorem!
anonymous
  • anonymous
you there?
anonymous
  • anonymous
im having trouble with the squareroot part
anonymous
  • anonymous
what exactly do you mean? :)
anonymous
  • anonymous
\[\sqrt{15}\]
anonymous
  • anonymous
are you doing the question you attached? how does the sqrt(15) come into it?
anonymous
  • anonymous
im doing em i just dont understand em
anonymous
  • anonymous
so you are doing the attached one? do you know pythagoras' theorem?
anonymous
  • anonymous
yes and yes a^2+b^2=c^2
anonymous
  • anonymous
correct :) in this case you need to find a, so rearrange the equation so that a is by itself
anonymous
  • anonymous
but the square root how do i figure that
anonymous
  • anonymous
when you rearrange, the equation is: a^2=c^2-b^2 i think you mean sqrt(53)=z? In pythagoras' theorem, the z is the equivalent of c because it is the hypotenuse, so you subsitute this into the equation: a^2=sqrt(53)^2-b^2 when you square a square root, you're basically just getting rid of the square root, so sqrt(53)^2=53 does that help?
anonymous
  • anonymous
yes
anonymous
  • anonymous
good, so you can answer the question now? :)

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