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Write in polar form 1+7i/(2-i) ²

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Write in polar form 1+7i/(2-i) ²
  • 1 answers

Gaurav Seth 4 years, 5 months ago

Let r cos θ = –1 and r sin θ = 1

On squaring and adding, we obtain r2 (cos2 θ + sin2 θ) = 1+ 1

⇒ r2 (cos2 θ + sinθ) = 2

⇒ r2 = 2       [cosθ + sin2 θ = 1]

This is the required polar form.

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