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Solve question 8:

8. The angle of elevation of the top of a vertical tower from a point A. due east of it is 45^{o}. The angle of elevation of the top of the same tower from a point B, due south ofA is 30^{o}. If the distance between A and B is 54 $\sqrt{2}\mathrm{m}$. then the length of the tower (in metres) is:

$\left(\mathrm{A}\right)54\left(\mathrm{B}\right)108\left(\mathrm{C}\right)54\sqrt{3}\left(\mathrm{D}\right)36\sqrt{3}$

https://www.meritnation.com/ask-answer/question/the-angle-of-elevation-of-the-top-of-a-tower-from-a-point-a/some-applications-of-trigonometry/4157447

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