If z1=2(cos30°+isin60°), z2=3(cos60°+isin30°). Find Re(z1z2).

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$I f z_{1} = \sqrt{2} (\cos 30 ° + i \sin 60 °), z_{2} = \sqrt{3} (\cos 60 ° + i \sin 30 °) . F i n d R e (z_{1} z_{2}) .$

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