Posted by **stanley** on Tuesday, July 13, 2010 at 10:37am.

an observer and a tree are standing against a slope. the observer is 80m from the tree.the angle between the slope, from the feet of the observer,and thetop of the tree is 14 degree.the slope makes an angle of 9 degree with the horizontal. solve the triangle formed by the feet of the observer and the bottom and top of the tree.

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