If x + iy = tan(A + iB), then what is the value of x2 + y2 + 2x cot 2A - 2?
2021
If x + iy = tan(A + iB), then what is the value of x2 + y2 + 2x cot 2A - 2?
Answer: B. -1
- A.
1
- B.
-1
- C.
0
- D.
2
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Correct answer: B
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