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In a triangle ABC if cosAcosB+sinAsin Bs...

In a triangle ABC if `cosAcosB+sinAsin BsinC=` then a` : b: c=`

A

`1:1:1`

B

`1:1:sqrt(2)`

C

`sqrt(2):1:1`

D

`1:sqrt(2):1`

Text Solution

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The correct Answer is:
B
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