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Each side of an equilateral triangle sub...

Each side of an equilateral triangle subtends an angle of `60^(@)` at the top of a tower h m high located at the centre of the triangle. If a is the length of each side of the triangle, then

A

`3a^(2)=2h^(2)`

B

`2a^(2)=3h^(2)`

C

`a^(2)=3h^(2)`

D

`3a^(2)=h^(2)`

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