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A math - Coggle Diagram
A math
D= b^2-4ac b=x corr. , a=x^2 corr. , c=constant
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Trigonometry
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R-formulae
asinc + bsinc = Rsin(c+a) vice versa for cos. R= sqrt a^2 + b^2 asinc + bcosc = R(a/r sin c + b/r cos c) = R(sinc cosd + cosc sind)
Graphs
sin graph: start from the bottom, go to the top and end at the bottom
cos graph: start from the top, go down and end at the top
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Double angle formulae
sin2a = 2sinacosa cosa cos2a = 2cos^2 a -1 = 1 - 2sin^2 a = cos^2 a -sin^2 a tan2a = 2tana / 1-tan^2 a
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