1.

If the area of the triangle ABC is a^(2)-(b-c)^(2) then its circumradius R=

Answer»

`((a)/(6))sin^(2)((A)/(2))`
`((a)/(16))"cosec"^(2)((A)/(2))`
`((b)/(16)) sin^(2)((B)/(2))`
`((C)/(16)) sin^(2)((C)/(2))`

ANSWER :B


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