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OpenStudy (anonymous):
Two tugboats that are a = 130 ft apart pull a barge, as shown. If the length of one cable is b = 218 ft and the length of the other is c = 230 ft, find the angle formed by the two cables.
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hero (hero):
|dw:1354844479801:dw|
hero (hero):
Use law of cosines
OpenStudy (anonymous):
yea i know i have to use law of cosines but i forgot my book in school and google confused me. do you mind if u solve it for me please
OpenStudy (anonymous):
do you perhaps happen to know the formula i should use
hero (hero):
\[a^2 = b^2 + c^2 - \sqrt{2bc \cos A}\]
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