Posted by **Lili** on Monday, September 2, 2013 at 3:22pm.

A surveyor measures the distance across a

straight river by the following methods: Starting directly across from a tree on the opposite

bank, she walks 249 m along the river bank to

establish a baseline. Then she sights across to

the tree. The angle from her baseline to the

tree is 38.2

How wide is the river?

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