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0 votes
2.5k views
in Mathematics by (15 points)
edited by

If z= √(20i - 21) + √(21 +20i) then arg(z) can be

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1 Answer

+1 vote
by (51.9k points)

or  -7-7i, 3-3i, -3+3i

ary(x)= π/4, -π/4, 3π/4, -3π/4

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