Q. Find the argument of the complex number 6−23i in the interval 0≤θ<2π.Express your answer in terms of π.Answer:
Calculate arctan value: To find the argument of a complex number in the form a+bi, where a is the real part and b is the imaginary part, we use the formula θ=arctan(ab). The complex number given is 6−23i, so a=6 and b=−23.
Simplify arctan expression: First, we calculate the arctan of b/a, which is arctan(−23/6). Simplifying the fraction gives us arctan(−3/3).
Adjust angle for interval: The value of arctan(−3/3) corresponds to the angle −π/6, because tan(−π/6)=−3/3. However, since we want the argument in the interval 0 \leq \theta < 2\pi, we need to add 2π to the negative angle to find the equivalent positive angle.
Finalize argument value: Adding 2π to −π/6 gives us the angle 11π/6, which is in the desired interval 0 \leq \theta < 2\pi.
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