Question

Each side of an equilateral triangle measures 30cm. Find the length of an altitude, a , of the triangle?

Answer 1

`X=25.98cm`

Explanation:

From the question we are told that:

Length of each side
`l=30cm`

Let the triangle be divide by two form a right angle triangle with base angles as
`90 \textdegree`(angle of perpendicularity) and
`60 \textdegree` (angle on each vertices of an equilateral triangle)

Generally the equation for the Altitude X is mathematically given by

Trigonometric Rule

`X=30sin60`

`X=15√(3)`

`X=25.98cm`