Chapter 6: Problem 5
In order to show that two vectors are equivalent, you must show that they have the same ________ and the same ________ .
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Chapter 6: Problem 5
In order to show that two vectors are equivalent, you must show that they have the same ________ and the same ________ .
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Show that the negative of \(z = r(\cos\ \theta + i\ \sin\ \theta)\) is \(-z = r[\cos(\theta+\pi) + i\ \sin(\theta+\pi)]\).
In Exercises 33-42, find the standard form of the complex number. Then represent the complex number graphically. \(9.75[\cos(280^{\circ}30') + i\ \sin(280^{\circ}30')]\)
Represent the complex number graphically, and find the trigonometric form of the number. $$2 \sqrt{2}-i$$
PROOF Use vectors to prove that the diagonals of a rhombus are perpendicular.
In Exercises 59-64, (a) write the trigonometric forms of the complex numbers, (b) perform the indicated operation using the trigonometric forms, and (c) perform the indicated operation using the standard forms, and check your result with that of part (b). \(\dfrac{1\ +\ \sqrt{3}i}{6\ -\ 3i}\)
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