Q. Find the argument of the complex number −22+22i in the interval 0≤θ<2π. Express your answer in terms of π.Answer:
Identify Quadrant: The complex number given is −22+22i. Here, a=−22 and b=22. Both a and b are negative and positive respectively, which places the complex number in the second quadrant.
Calculate ∣ab∣: In the second quadrant, the argument θ is π−arctan(∣ab∣). Let's calculate ∣ab∣:|\frac{b}{a}| = |\frac{\(2\)\sqrt{\(2\)}}{\(-2\)\sqrt{\(2\)}}| = |\(-1| = 1
Calculate arctan(1): Now we calculate arctan(1), which is known to be 4π or 45 degrees.
Calculate Argument Theta: Since the complex number is in the second quadrant, the argument theta is: θ=π−arctan(1)=π−4π=43π
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