sir this is the question from the book -ML aggarwal( avichal publication) class 10th , chapter20 , heights and distances
we have been given that From the top of a cliff 92 m high,
the angle of depression of a buoy is 200. we
have to Calculate to the nearest metre, the distance of the buoy from the foot of the cliff.
question no 7 , heights and distances , ICSE board, ML aggarwal