A particle is projected with an angle of projection `theta` to the horizontal line passing through the points (P,Q) and (Q,P) referred to horizontal and vertical axes (can be treated as X-axis and Y-axis respectively). The angle of projection can be given by

Options

A. `tan^(2)[(P^(2)+PQ+Q^(2))/(PQ)]`
B. `tan^(-1) [(P^(2)+Q^(2)-PQ)/(PQ)]`
C. `tan^(-1) [(P^(2)+Q^(2))/(2PQ)]`
D. `sin^(-1) [(P^(2)+Q^(2)+PQ)/(2PQ)]`

Answer

A