Question

P is resultant of a and b. q is resultant of a and minus b the value of p square + q square is equals to

Answer 1

Answer:

2a square + 2 b square

Explanation:

we know that resultant of vector is equal to under root of a square + b square + 2 a b cos theta therefore by using this p square is equal to a square + b square + 2 a b cos theta and square is equal to a square + b square minus 2 a b cos theta by adding both answer is 2 a square + 2 b square