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Mathematics, 07.04.2020 17:39 dontcareanyonemo

4 ( cos 16 + i sin 16 ) x ( cos 14 - i sin 14 ) = …………….
a . - 5 - 5 √ i
b . 5 + 5 √ i
c . 5 - 5 √ i
d . - 5 + 5 √ i

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4 ( cos 16 + i sin 16 ) x ( cos 14 - i sin 14 ) = …………….
a . - 5 - 5 √ i
b . 5 + 5 √ i...
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