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Syllabus

q: I shall play in afternoon

Negation of "If sun is shining, then i shall play in the afternoon" is:

a) p^~q b) q--> ~p c) ~q--> ~p d) q^ ~p

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