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A constitution is a set of principes laid out in a document for the running of a country. It covers the role of the executive (Prime Minister or President), the legislature (e.g. House of Commons) and the ju...

From the double angle formula for cosine, we know that cos(2x)=cos 2 (x)-sin 2 (x). Also, we know that sin 2 (x)+cos 2 (x)=1. So by substituting the second formula into the first, we can say that cos(2x)=(1-...

To differentiate tan(x): Note: Here, we use d/dx f(x) to mean "the derivative of f(x) with respect to x". 1) rewrite tan(x) as sin(x)/cos(x) 2) Apply the quotient rule (or, alternatively, you could...

An object experiances a force if it's pushed or pulled, and is measured in newtons. These forces are represented as arrows in force diagrams, these arrows give information on how big and in what direction th...

The equation of a metal ion forming a metal hexaaqua ion in aqueous solution is as follows. M n+ + 6H 2 O > [M(H 2 O) 6 )] n + These are acidic because the metal is positively charged , and so attracts el...