Tutorial Basic Formulas and Results of Vectors


Basic Formulas and Results of Vectors


   

1) If then magnitude or length or norm or absolute value of is


2) A vector of unit magnitude is unit vector. If is a vector then unit vector of is denoted by and


3) Important unit vectors are , where


4) The components of unit vectors of are called the direction cosines of , denoted by and


5) If, then are called directional angles of the vectors and


6) If and are the two points, then


7) If and then


8) If and is a scalar number, then.


9) In vector addition
I.
II.
III.
IV. , is the additive identity in vector addition.
V. , is the inverse in vector addition.



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