A uniform ladder rests in limiting equilibrium with its lower end on a rough horizontal plane with coefficient of friction `mu` and its upper end against a smooth vertical wall. If `theta` is the inclination of the ladder with the wall, then `theta` is equal to

Options

A. `tan^(-1)mu`
B. `cot^(-1) mu`
C. `cot^(-1) (2mu)`
D. `tan^(-1) (2mu)`

Answer

D