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The arms of a compass are each 12.5 cm long and their ends are 6.5 cm apart. Find the angle between them. how would this be set up? in a circle? Which side is the hypotenuse?
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Draw a picture:|dw:1391703928286:dw| Note that \(a\) in this drawing is half of the angle between them.
You should be able to find the value of \(a\) from the definition of the \(\sin\) function in a right triangle.
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