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Mathematics 7 Online
OpenStudy (anonymous):

Find the product of z1 and z2 where z1 = 8(cos 40° + i sin 40°), and z2 = 4(cos 135° + i sin 135°). OPTIONS: 32(cos 40° + i sin 40°) 12(cos 175° + i sin 175°) 32(cos 5400° + i sin 5400°) 32(cos 175° + i sin 175°) PLEASE HELP

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