1.

If A, B, C are angles of a triangle ABC, then |(sin.(A)/(2),sin.(B)/(2),sin.(C)/(2)),(sin(A+B+C),sin.(B)/(2),sin.(A)/(2)),(cos.((A+B+C))/(2),tan(A+B+C),sin.(C)/(2))| is less than or equal to

Answer»

`(3sqrt(3))/(8)`
`(1)/(8)`
`2sqrt(2)`
2

Answer :B


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