10-11-2018
Mathematics

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Express 2(cos225 + i sin225) in the complex form a + bi

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altavistard altavistard

10-11-2018

2(cos225 + i sin225) can be rewritten as

2(- 1 / √2 - i / √2) = 2(1/√2 [1+i]) = √2(1+i) or √2 + i√2

Rationalize the denominator next:

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7x5c9z3zgn 7x5c9z3zgn

15-12-2020

Answer: D) - sqrt 2 - sqrt 2i

Step-by-step explanation:

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