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In a triangle ABC, if the sides are a=3,...

In a triangle ABC, if the sides are `a=3, b=5, c=4, ` thenb the value of `(sin ""B/2+ cos ""B/2)` is equal to-

A

`(sqrt3-1)/(sqrt2)`

B

`sqrt2`

C

1

D

`(sqrt(3)+1)/(2)`

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The correct Answer is:
B
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