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Mathematics 9 Online
OpenStudy (kadams10):

URGENT or i will fail the class in order to apply the law of cosines to find the measure of an interior angle it is enough to know a.the area of triangle b. the lengths of all 3 sides c.at least 2 of the angles of the triangle and the length of one of its slides

OpenStudy (mjdennis):

Can you write out the law of cosines?

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