I require some help to push me in the right direction to solve these equations.
$$t_1 = P_1\sin(A)\sin(B) + P_2\cos(A)\cos(B)$$
$$t_2 = P_3\cos(A)\sin(B) + P_4\sin(A)\cos(B)$$
where $t_1, t_2, P_1, P_2, P_3, P_4$ are known coefficients. Solving for $A$ and $B$.
Any help greatly appreciated.
This may seem like it, but this is not homework