Question

What do you mean by negative of a vector? Give the formula for magnitude and direction for the resultant vector by triangle law of vector addition.​

Answer 1

Answer:

Vectors having the same length as a particular vector but the opposite direction are called negative vectors. A negative sign will reverse the direction of a vector and make it a negative vector.

Answer 2

Answer:

Triangle Law of Vector Addition Derivation

Consider two vectors \vec{P} and \vec{Q} that are represented in the order of magnitude and direction by the sides OA and AB, respectively of the triangle OAB. Let \vec{R}be the resultant of vectors \vec{P} and \vec{Q}. Above equation is the magnitude of the resultant vector.