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Trigonometry (Graphs (Functions (cos(x) cos(x), tan(x)=sin(x)/cos(x)…

- - - - O=Hsin(x)=Atan(x)
      - A=Hcos(x)=O/tan(x)
      - H=O/sin(x)=A/cos(x)
    - - cos(x)=A/H
      - tan(x)=O/A
      - sin(x)=O/H
- - - - a^2+b^2=c^2
      - Pythagorean Triples
        
        c=m^2+n^2
        
        b=m^2-n^2
        
        a=2mn
  - - - sin(A)/a=sin(B)/b=sin(C)/c
      - a/sin(A)=b/sin(B)=c/sin(C)
    - - a^2=b^2+c^2-2bc*cos(A)
      - A=cos^-1((b^2+c^2-a^2)/(2bc))
    - - A=ab*sin(C)/2