sir this is the important question from the book -ML aggarwal( avichal publication) class 10th , chapter20 , heights and distances
we have that From the top of a hill,
the angles of depression of two consecutive kilometer stones,
due east are found to be 300 and 450 respectively.
now we have Find the distance of two stones from the foot of the hill.
question no 19 , heights and distances , ICSE board