Help with a trigonometric identity proof

[Konos]

The question says "Prove that for a triangle ABC: c^2sin(2A) + a^2sin(2C) = 2acsinB is true". I think I need to do something with sine and cosine rule but I'm stuck.

 

[Deleted member 4993]

The question says "Prove that for a triangle ABC: c^2sin(2A) + a^2sin(2C) = 2acsinB is true". I think I need to do something with sine and cosine rule but I'm stuck.

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