I need a very, very, VERY hard Angle of Elevation/depression problem. Please supply the process and answer. Thanks 
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BTW It's for a project in Trigo
Edit:
I found this in the net:
There are two temples, one on each bank of a river, just opposite to each other, One temple is 54m high. From the top of this temple, the angles of depression of the top and foot of the other temple are 30 degrees and 60 degrees respectively. Find the width of the river and the height of the other temple.
) BTW It's for a project in Trigo
Edit:
I found this in the net:
There are two temples, one on each bank of a river, just opposite to each other, One temple is 54m high. From the top of this temple, the angles of depression of the top and foot of the other temple are 30 degrees and 60 degrees respectively. Find the width of the river and the height of the other temple.