From a point A, due south of a tower , the angle of elevation of the top is 45degree, another point B is due east of the tower and the bearing of B from A is 30degree. Find the angle of elevation of the top of the tower B

Answer 1

Label the top of the tower T and the bottom S.
If the height ST is h, then you know that SA = h
since angle SAB is 30°, SB = h/√3
Now you have triangle SBT, which is congruent to SAB.
so, ...