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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 45o. The angle of elevation of the top of the same tower from a point B, due south ofA is 30o. If the distance between A and B is 54 . then the length of the tower (in metres) is: