Question

what is parallelogram law? define its expectation for two vector inclined at Q and there resultant at alpha also calculate its dirn of resultant​

Answer 1

Answer:

In mathematics, the simplest form of the parallelogram law belongs to elementary geometry. It states that the sum of the squares of the lengths of the four sides of a parallelogram equals the sum of the squares of the lengths of the two diagonals. Using the notation in the diagram on the right, the sides are.