Pat needs to determine the height of a tree before cutting it down to be sure that

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Pat needs to determine the height of a tree before cutting it down to be sure that it will not fall on a nearby fence. The angle of elevation of the tree from one position on a flat path from the tree is 30°, and from a second position 40 feet farther along this path it is 20°.What is the height of the tree?

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Precalculus

ISBN: 978-0321716835

9th edition

Authors: Michael Sullivan

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