The minimum value of the expression `sin alpha + sin beta+ sin gamma`, – InterviewSolution

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1.	The minimum value of the expression `sin alpha + sin beta+ sin gamma`, where `alpha,beta,gamma` are real numbers satisfying `alpha+beta+gamma=pi` isA. positiveB. zeroC. negativeD. -3
Answer» Correct Answer - C For `alpha=-pi//2,beta=pi//2andgamma=2pi` `sinalpha+sinbeta=singamma=-2` Hence, the minimum value of the expression is negative.

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