Complex Numbers And Quadratic Equations question 103
If $ 0<\arg\text{ (z)}<\pi \text{,} $ then $\arg (z) $ - $\arg (-z)= $
Options:
0
B) $ 2, \text{amp}(z) $
C) $ \pi $
D) $ -\pi $
Show Answer
Answer:
Correct Answer: C
Solution:
amp(z) $ -amp(-z)={{\tan }^{-1}}\frac{y}{x}-( {{\tan }^{-3}}\frac{y}{x}-\pi )=\pi $
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