Each side of an equilateral triangle subtends an angle of `60^(@)` at the top of a tower hm high located at the centre of the triangle. It a is the length of each side of the triangle, then prove that `2a^(2) = 3h^(2)`.

Options

A. `3a^(2) = 2h^(2)`
B. `2a^(2) = 3h^(2)`
C. `a^(2) = 3h^(2)`
D. `3a^(2) = h^(2)`

Answer

B