Write the standard form of the complex number 4(cos(4π÷3)+isin(4π÷3)    Find the product: [4(cos(π/3)+isin(π/3)][3(cos(5π/6)+isin(5π/6).   Find the qoutient: cos150\deg + i sin150\deg /2(cos50\deg + isin50\deg).

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