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

`1/2 a^2 sin 2A`

`1/2 b^2 sin 2A`

`b^2 sin 2A`

`a^2 sin 2A`

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