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April 20, 2014

Homework Help: Math, Trig

Posted by Sonny on Monday, October 1, 2012 at 8:00pm.

The high level bridge, a railway bridge that crosses the Oldman River is over 1km long. From one point on the river, the angle of elevation of the top of the bridge is 62.6 degrees. From a point 20m closer to the bridge, the angle of elevation of the top of the bridge is 72.8 degrees. How high is the brige above the river, to the nearest meter? I am really confused by this question like I know what its asking but I dont know how to draw it out on paper so i can work it out.

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