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Question

If |z|=2, argz=π6, then z=

A
3i
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B
3+i
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C
1+3i
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D
13i
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Solution

The correct option is B 3+i
z=rcosθ+rsinθi

z=2cos(π6)+2sin(π6)i

z=2(32)+2(12)i

z=3+i

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