Please help me out. :)

A picture 7ft high is placed on a wall w/its base 9ft above the level of an observer. How far from the wall should the observer stand to get the best view of the picture, that is, so that the angle subtended at the observer's eye by the picture is maximum?

Question

Please help me out. :)

A picture 7ft high is placed on a wall w/its base 9ft above the level of an observer. How far from the wall should the observer stand to get the best view of the picture, that is, so that the angle subtended at the observer's eye by the picture is maximum?

rational · Answer

same complexity, if you can find a simpler solution to this you can do the previous problem also easily...

anonymous · Answer

is the illustration right? |dw:1400069554610:dw|