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Cosine, Cosine Law, a²=b²+c²-2bccosine A, b²=a²+c²-2accosine B, c²=a²+b²-2abcosine C, Inverse Cosine, cos^-1, cos = adjacent / Hypotenuse
Sine, Sine Law, (Sin A/a) = (Sin B/b) = (Sin C/c), Inverse Sine, sin^-1, sin = opposite / hypotenuse
Tangent, Inverse Tangent, tan^-1, Adjacent / Hypotenuse
x²+4x+2
How to plot, read and understand information on a graph
how to get from one equation to more complex equation to solve a more complex equation