A mirror produces an image of the sun, and the image is located 0.9900 m from the mirror. The same mirror is then used to produce an image of the tree. The image of the tree is 1.0000 m from the mirror. The image of the tree is inverted, and the magnitude of the height of the image is 0.16 m.
(a) What is the algebraic expression for the object distance do of the tree from the mirror? Express your answer in terms of the image distance di of the tree and the image distance ds of the sun.