Sunday

April 20, 2014

April 20, 2014

Posted by **Jess D** on Saturday, March 15, 2008 at 8:52pm.

- Maths -
**Reiny**, Saturday, March 15, 2008 at 9:23pmYou know the angles of an equilateral triangle are 60º each.

The altitude will form a right-angles triangle with angles 30,60,90º

the lengths of those sides could be 1,√3, and 2

so by ratios:

x/2 = 12/√3

x = 24/√3 = 13.856

or

sin 60 = 12/x

x = 12/sin60 = 13.856

**Related Questions**

Geometry - Find the area of each equilateral triangle. The triangle has 12cm ...

Maths - An equilateral triangle with side length 33 is divided into 33^2 smaller...

Maths - An equilateral triangle with side length 33 is divided into 33^2 smaller...

math - one side of an equilateral triangle is 42cm.find the length of an ...

algebra - Find the length of a side of an equilateral triangle with altitude of ...

Algebra - The perimeter of an equilateral triangle is 7 in. more than the ...

maths - the ratio of the length of sides of equilateral triangle to the height ...

Algebra - Identify the triangle PQR as isosceles ( two sides equal length) ...

math - triangle ABC has vertices A(3,4), B(4,-3) and C(-4,-1). a. draw a sketch ...

Maths - I am trying to work out the area and perimeter of an equilateral ...