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In a rectangle ABCD, AB= 15 cm angle BAC...

In a rectangle ABCD, AB= 15 cm `angle BAC = 60^@` then BC is equal to

A

`15 sqrt2 cm`

B

`15 cm`

C

`15 sqrt5 cm`

D

`15 sqrt3 cm`

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The correct Answer is:
D
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