and analytical geometry of curves and surfaces. The second unit delves into the algebra of operators and their types and also explains the equivalence between the algebra of vector operators and the ...

Vectors are equal if they have the same magnitude and direction regardless of where they are. Triangle ABC is isosceles. X is the midpoint of AB, Y is the midpoint of BC and Z is the midpoint of AC.

The sine and cosine rules calculate lengths and angles in any triangle. Vectors - Edexcel A vector quantity has both size and direction. Vectors can be added, subtracted and multiplied by a scalar.