## A geometrical vector algebra |

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3-space A B C A B plane algebra angle ax ay ax by cx axby axial plane axis axis of rotation centre circle COLLINEAR Complex numbers conic vector coordinates coplanar equation cular vectors curve diagonal dicular differential directed unlocated Equating coefficients Example 1.—Find expressed in terms factors find the product fourth power geometrically evident gives helix Hence laws of signs length locus loga operand operator is equivalent parallelogram parallelopiped permutable perpen plane of rotation plane perpendicular positive direction prism quaternion radius rectangular axes rotor Saa Sab Sba Sab Sac Sab Sba Sbb Sba Sbb Sbc Sbb These forms second vector solid geometry spherical triangle straight line STRAIGHT VECTORS tensor tensor-rotor trigonometry unit vectors variables vector addition vector arc vector product X Y plane x y z zero