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Home > PC > Chapter 10 > Lesson 10.1.3 > Problem 10-43


Greg’s shadow is cast on a wall by a light on the ground which is meters from the wall. Greg is centimeters tall. Express the height (in meters) of his shadow, , as a function of his distance from the wall, .

Draw and label a diagram.

See diagram at right.
What expression would you use for the '?' ?

Write a proportion using the similar triangles in the diagram.

Now rewrite the equation in form.