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March 3, 2015

March 3, 2015

Posted by **Barnie** on Monday, April 18, 2011 at 1:42pm.

- Math -
**Henry**, Wednesday, April 20, 2011 at 2:28pmDraw a rectangle with the long sides

hor and the short sides(210ft) ver.

Draw a diagonal from the upper left hand corner to the lower rt corner.

The angle between the diagonal and the

top hor side is the angle of depression.

tan27 = Y/X,

tan27 = 210/X,

X = 210 / tan27 = 412ft = dist. from

boat to foot of lighthouse.

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