Question
Download Solution PDFComprehension
What is angle θ such that z is purely real ?
where n is an integer
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
If z = x + iy is purely real, then y = 0
Calculation:
Given,
z =
Multiply numerator and denominator by (1 + i sin θ)
Since z is purely real,
⇒
⇒ sin θ = 0
⇒ θ = nπ
∴ The correct answer is option (3).
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