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__Trigonometry__

In Maths recently, I have been teaching myself and others the fundamentals of Trigonometry (Sine, Cosine, Tangent) and about The Law of Cosines. Unfortunately, though it is not that hard, whenever I've used to try to solve for a side of a triangle, I've ended up with a ridiculously far out answer. Even when I've tried with other people it's always turned out badly, but I've kept on trying.

A rough guide to some Mathsy Stuff:

Sine =

Opposite

Divided

Hypotenuse

Cosine =

Adjacent

Divided

Hypotenuse

Tangent =

Opposite

Divided

Adjacent

Adjacent: The side adjacent to the Theta and the Hypotenuse

Opposite: The side opposite the Thete

Hypotenuse: The longest side

a: A side that isn't the Hypotenuse

b: The other side that isn't the Hypotenuse

c: The Hypotenuse

A, B, C: The angle opposite the side with it's lower case counterpart

Law of Cosines: (a squared) + (b squared) - 2ab*cos*C = c