10th Class Mathematics Solved Paper - Mathematics-2016 Outside Delhi Set-II

  • question_answer As observed from the top of a light house, 100 m high above sea level, the angles of depression of a ship, sailing directly towards it, changes from to. Find the distance travelled by the ship during the period of observation. (Use)


    Let CD be a light house of length 100 m and A and B be the positions of ship sailing towards it.
    Then, in ,
    And, in
     Distance travelled by the ship


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