Each side of an equilateral triangle subtends an angle of at the top of a tower of…

MATHEMATICS · Single correct · A Level · Mathematics · Vectors · Vectors

Problem

Each side of an equilateral triangle subtends an angle of 60∘60^\circ at the top of a tower of height hh m located at the centre of the triangle. If aa is the length of each side of the triangle, then (1) 3a2=2h23a^2=2h^2 (2) 2a2=3h22a^2=3h^2 (3) a2=3h2a^2=3h^2 (4) 3a2=h23a^2=h^2

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