Angle to the top of the building or base of the tower = 36 degrees Angle to the top of the radio tower on the building = 46 degrees Distance from the base at which the surveyor is standing = 67 meters Let us assume the distance of the base of the tower from the surveyor = x1 Let us assume the distance of the top of the tower from the surveyor = x2 Then tan(36) = x1/67 x1 = 67 tan(36) and tan(46) - x2/67 x2 = 67 tan(46) Now x2 - x1 = 67 tan(46) - 67 tan(36) = 20.702 = 20.7 m From the above deduction, it can be concluded that the correct option among all the options that are given in the question is the second option or option "b".