question_answer

The angle of elevation of the top of a tower from a point A due south of the tower is and from a point B due east of the tower is\[\mathbf{45}{}^\circ .\] If AB = 160 metre then the height of the tower is _________

A)  \[\frac{160}{\sqrt{3}}\] m                     

B)         75\[\sqrt{3}\] m

C)  80\[\sqrt{3}\] m                                                            

D) 80 m

E) None of these