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14-12-2019
Mathematics

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BenjaminAshr BenjaminAshr

14-12-2019

Answer:

AC=BD=20 units

Step-by-step explanation:

given: the figure is a rhombus

therefore AB=BC=CD=DA=10 units (since given)

angle A= 60°

cos60°=AB/BD

1/2=10/x

therefore x=10×2

=20 units

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