Pg. 830 : Question #7

Hamlet tells his companions that he is likely to put on an "antic disposition" because he plans to start acting mad (in the crazy sense, not angry.) His behavior is partly a natural reaction to his anger and grief but mostly a deliberate strategy because he plans to use it as a distraction while he figures out if the ghost was telling him the truth about Claudius, and if it was then he would need to figure out how he would go about gaining revenge for his father.