The angles of elevation θ and φ, to an airplane are being continuously monitored at two observation points A and B, which are 2 miles
apart. Write an equation giving the distance d
between the plane and point B in terms of θ
and φ.

Question

The angles of elevation θ and φ, to an airplane are being continuously monitored at two observation points A and B, which are 2 miles
apart. Write an equation giving the distance d
between the plane and point B in terms of θ
and φ.

mathmale · Answer

I'd strongly suggest sketching and labeling a diagram as your first step in solving this problem.