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Politics is the study of how people use power to organise themselves, their society and their resources. In most modern societies it refers to the affairs of a government and the people who keep it in place,...

Magma can be described as melted rock deep within the Earth, usually originating from the melting of the upper mantle or crust. The magma will generally contain silica tetrahedra as well as many metal cation...

When tackling a question which asks you why a historical process or event occurred, the first thing to remember is that any answer you give must approach the question from a variety of different angles; no o...

While the introduction and the main body of an essay are obviously very important to gaining a good mark, the most integral aspect of essay writing is the conclusion. A paragraph at the very end of an essay ...

Make use of identity sech^2(x) = tan^2(x) + 1 => 2{tan^2(x) + 1} = 3 + tan(x) Multiply out brackets and rearrange => 2tan^2(x) - tan(x) - 1 = 0 Use quadratic formula with a = 2, b = -1, c = -1 => ta...