The magnitudes of vectors `vecA,vecB and vecC` are 3,4 and 5 units respectively. If `vecA+vecB= vecC`, the angle between `vecA` and `vecB` is

Options

A. `(pi)/2`
B. `cos^(-1)(0.6)`
C. `tan^(-1)(7/5)`
D. `(pi)/4`

Answer

A