lkporter06 lkporter06

06-03-2017
Mathematics

contestada

Find the fourth roots of 81(cos 320° + i sin 320° ).

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Lfbfaye Lfbfaye

06-03-2017

cos 32-+ sin 320= -0.64278706 or to simply that -0.6427
Square root of 81 is 9

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