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Select and write the correct answer from the given alternatives in each of the following: The polar form of complex number (1 - i) is

A

a) `sqrt(2) [cos (30^@) + i sin(30^@)]`

B

b) `sqrt(2) [cos (-45^@) + i sin(-45^@)]`

C

c) `sqrt(2) [cos (60^@) + i sin(60^@)]`

D

d) none of these

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