Question

When two vectors `vecA` and `vecB` of magnitudes `a` and `b` respectively are added, the magnitude of resultant vector is always
A. equal to (a +b)
B. less than (a +b)
C. greater than (a+b)
D. greater than (a +b)

Answer 1

Correct Answer - D
`|vecA + vecB| = sqrt(a^(2) + b^(2) + 2ab cos theta)`
`-1le costhetale1`
Then, not greater than a+ b.