If `alpha+beta+gamma=2pi` thenA. `tan""(alpha)/(2)tan""(beta)/(2)+tan" – InterviewSolution

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1.	If `alpha+beta+gamma=2pi` thenA. `tan""(alpha)/(2)tan""(beta)/(2)+tan""(gamma)/(2)+tan""(alpha)/(2)tan""(beta)/(2)tan""(gamma)/(2)`B. `tan""(alpha)/(2)tan""(beta)/(2)+tan""(beta)/(2)+tan""(gamma)/(2)tan""(gamma)/(2)tan""(alpha)/(2)=1`C. `tan""(alpha)/(2)tan""(beta)/(2)+tan""(gamma)/(2)+=-tan""(alpha)/(2)tan""(beta)/(2)tan""(gamma)/(2)`D. `tan""(alpha)/(2)tan""(beta)/(2)+tan""(beta)/(2)tan""(gamma)/(2)+tan""(gamma)/(2)tan""(alpha)/(2)=0.`
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