SOLUTION: The diagonals of a parallelogram have lengths of 12cm and 18cm and the angle between them is 72degree.Find the lengths of the sides of the parallelogram.

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Question 935733: The diagonals of a parallelogram have lengths of 12cm and 18cm and the angle between them is 72degree.Find the lengths of the sides of the parallelogram.
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
Not really a solution process with steps, but the diagonals intersect eachother at their midpoints. You therefore have two lengths and an angle between them. Use Law of Cosines.