Question

What is vector and parallelogram law in a vector
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Answer 1

Answer:

Explanation:

If two vectors acting simultaneously at a point can be represented both in magnitude and direction by the adjacent sides of a parallelogram drawn from a point, then the resultant vector is represented both in magnitude and direction by the diagonal of the parallelogram passing through that point

Answer 2

$\mathfrak{\large{\underline{\underline{Answer:-}}}}$

Vector :- Those physical quantities which need both magnitude and direction for their complete expression is called vector quantity and which follows all law of vector addition or subtraction .

Ex:- Force, Velocity, acceleration, displacement etc.

The parallelogram law of vector :-

According to parallelogram law of vector:-

Two vectors A and B such that if they considered two adjacent side of parallelogram then the resultant is given by the diagonal of parallelogram in opposite order.

The resultant of vector law of addition is given by :-

$\bold</strong><strong>\</strong><strong>r</strong><strong>e</strong><strong>d</strong><strong>{</strong><strong>\sqrt{ {a}^{2} + {b}^{2} + 2ab \: cos θ} </strong><strong> }$

where θ is angle between two vectors.