Mathematics, 01.04.2021 17:30, expresslmnop

A painting in an art gallery has height h and is hung so that its lower edge is a distance d above the eye of an abserver. How far from the wall should the observer stand to get the best view?(maximize the angle) - the answer is 5-2root5 from A I dont know the reason

A painting in an art gallery has height h and is hung so that its lower edge is a distance d above

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A painting in an art gallery has height h and is hung so that its lower edge is a distance d above t...