z=−8+3iFind the angle θ (in radians) that z makes in the complex plane. Round your answer, if necessary, to the nearest thousandth. Express θ between −π and π.θ=
Q. z=−8+3iFind the angle θ (in radians) that z makes in the complex plane. Round your answer, if necessary, to the nearest thousandth. Express θ between −π and π.θ=
Identify parts of z: Identify the real and imaginary parts of the complex number z.z=−8+3i, where the real part is −8 and the imaginary part is 3.
Calculate angle theta: Calculate the angle θ using the arctangent function.The angle θ in the complex plane is given by the arctangent of the imaginary part divided by the real part, which is arctan(−83). However, since the real part is negative and the imaginary part is positive, the angle lies in the second quadrant.
Use arctangent function: Use a calculator to find the arctangent of −83. θ=arctan(−83)≈arctan(−0.375)
Calculate theta in radians: Calculate the approximate value of theta in radians. θ≈−0.359 (in radians, using a calculator)
Adjust angle in quadrant: Adjust the angle to lie in the correct quadrant.Since the angle is in the second quadrant, we need to add π to the calculated value to get the angle between −π and π.θ=−0.359+π
Calculate final theta: Calculate the final value of theta.θ≈−0.359+3.142 (using the approximation π≈3.142)θ≈2.783 (in radians)
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