Why does he divide root3x in half? In a 30-60-90 triangle, the side opposite the 60 angle is root3x, why would he divide it in half here? Shouldn’t h= root3x?
AF : DF : AD are in a
30° : 60° : 90° relation so their sides are in a
m : m√3 : 2m relation. Using the length given in question,
m : m√3 : x.
In other words, x = 2m, so m= x/2
DF = m√3 = (x√3)/2