In a Delta ABC, a,b,A are given and c(1...

In a `Delta ABC, a,b,A ` are given and `c_(1), c_(2)` are two valus of the third side c. The sum of the areas two triangles with sides a,b,`c_(1) and a,b,c_(2)` is

`1/2a ^(2) sin 2A`

`1/2a ^(2)sin 2A`

`b ^(2)sin 2A`

None of these

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