What is the trigonometric form of $(16 + 3 i)$ $(16+3i)$ ?

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Answer 1 · 2015-12-18T23:18:30

I found: $z = 16.279 [cos ({10.620}^{\circ}) + i sin ({10.620}^{\circ})]$ $z=16.279[cos(10.620^@)+isin(10.620^@)]$

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What is the trigonometric form of (16+3i) (16+3i) ?