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

Question

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

Accepted Answer

$	an^{-1}\left[\frac{P^2 + PQ + Q^2}{PQ}ight]$

Answer

$	an^{-1}\left[\frac{P^2 + Q^2 - PQ}{PQ}ight]$

Answer

$	an^{-1}\left[\frac{P^2 + Q^2}{2PQ}ight]$

Answer

$\sin^{-1}\left[\frac{P^2 + Q^2 + PQ}{2PQ}\right]$

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