1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Kobotan [32]
3 years ago
15

Find a side of an equilateral triangle with a 12 inch altitude

Mathematics
1 answer:
saveliy_v [14]3 years ago
8 0
Since the triangle is an equilateral triangle we know all of it's sides must be the same length, with that in mind the angles that make up the triangle must be equal as well. Knowing that a triangle's three interior angles make up 180 degrees we know that the size of each angle must be one third of this (as each angle must be equal).

180/3 = 60


then we may split the triangle along it's altitude into two special right triangles
more specifically two 30-60-90 triangles.

this means that the side with 30 degrees will be some value "x" where the side for 60 degrees will be related as it is "x*sqrt(3)" and the hypotenuse (which would be the side of the triangle) would be proportionally "2x"

this would mean that the altitude is the side associated with the 60 degree angle as such we can solve for "x" using this.

12= x*sqrt(3)
12/sqrt(3)=x
4sqrt(3)=x  (simplifying the radical we get "x" equals 4 square root 3)

now we may solve for the side length of the triangle which is "2x"

2*4sqrt(3) ->   8sqrt (3)  

eight square root of three is the answer.
You might be interested in
A farmer will divide a 1/4 acre plot of land into three equal-sized sections what will be the size of each section?
Natalija [7]
1/4:3= 1/4•1/3=1/12acre - size of each section

1/2•1/5=1/10yard
8 0
3 years ago
Read 2 more answers
30 dimes to 55 dimes
puteri [66]
55-30=25
So it is + 25 dimes
5 0
3 years ago
Read 2 more answers
Friend of mine needs an explanation of this problem.
horsena [70]
Hope u find some help
8 0
2 years ago
Given: Base ∠BAC and ∠ACB are congruent.
Sergio039 [100]

Refer to the image attached.

Given: \angle BAC and \angle ACB are congruent.

To Prove: \DeltaABC is an isosceles triangle.

Construction: Construct a perpendicular bisector from point B to Line segment AC.

Consider triangle ABD and BDC,

\angle BAD = \angle BCD (given)

\angle ADB = \angle BDC = 90^\circ

(By the definition of a perpendicular bisector)

AD=DC (By the definition of a perpendicular bisector)

Therefore, \Delta ABD \cong \Delta BDC by Angle Side Angle(ASA) Postulate.

Line segment AB is congruent to Line segment BC because corresponding parts of congruent triangles are congruent.(CPCTC)

8 0
3 years ago
Read 2 more answers
A right triangle with side legs of length 13 and 12 what is the value of x enter your answer in the box ​
Y_Kistochka [10]

Step-by-step explanation:

x =  \sqrt{ {12}^{2} +  {13}^{2}  }  \\  = \sqrt{ 144 +  169  }   \\  =  \sqrt{313}  \\  = 17.69 \\

4 0
3 years ago
Read 2 more answers
Other questions:
  • 1. Six less than n is less than - 4. how would o write this equation <br>​
    15·2 answers
  • PLEASE HELP ILL GIVE 50 POINTS AND I WILL MARK BRAINLIEST
    5·2 answers
  • What is 3.42857142857 rounded to the nearest hundredth
    10·2 answers
  • Help me pls!! Only if you know it 30 points
    15·1 answer
  • Which graph shows the solution to the equation below log3(x+3)=log0.3(x-1)
    7·2 answers
  • Which point on the number line best represents 22
    7·2 answers
  • $250 at 4 percent for 1 year
    14·1 answer
  • What are the dimensions of the product?<br> -3<br> 2<br> 4 -3<br> X-2<br> 3<br> 5
    13·1 answer
  • 78 – 24 divided by (14 – 6) x 2
    5·1 answer
  • DOES ANYONE KNOW HOW TO DO THIS? DUE AT 11 TONIGHT PLS HELP!
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!