AP EAMCET · Maths · Complex Number
is equal to
- A
- B
- C
- D
Answer & Solution
Correct Answer
(D)
Step-by-step Solution
Detailed explanation
Given (sinθ-icosθ)3 Multiplying and dividing by i, we get 1i·i·sinθ-icosθ3 =-iisinθ+cosθ3 (Because 1i=-i) =-i3cosθ+isinθ3 According to De Moivre's Theorem, For n be any rational number,…
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