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$[\{\sin x + \cos x\}] =$ (where {.} and [.] are the fractional par and the integral part

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Correct option is B

Since {x}∈[0,1), ∀x∈R⇒[{x}]=0

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sinx+cosx=(where {.} and [.] are the fractional par and the integral part

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$[\{\sin x + \cos x\}] =$ (where {.} and [.] are the fractional par and the integral part