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Ch. 1 - Trigonometric Functions
Lial - Trigonometry 12th Edition
Lial12th EditionTrigonometryISBN: 9780136552161, 9780135440780, 9780136881117, 9780135440827, 9780135924891Non è quello che usi tu?Cambia libro di testo
Capitolo 2, Problema 103

Write an expression that generates all angles coterminal with each angle. Let n represent any integer. 135°

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1
Understand that angles are coterminal if they differ by full rotations of 360°. This means adding or subtracting multiples of 360° to the given angle will produce all coterminal angles.
Identify the given angle, which is 135° in this problem.
Express the general form of all coterminal angles by adding 360° multiplied by an integer \( n \), where \( n \) can be any integer (positive, negative, or zero).
Write the expression for all coterminal angles as \( 135° + 360° \times n \).
Note that \( n \in \mathbb{Z} \) (the set of all integers), which ensures you cover every possible coterminal angle.

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Coterminal Angles

Coterminal angles are angles that share the same initial and terminal sides but differ by full rotations. They can be found by adding or subtracting multiples of 360° to the given angle, resulting in angles that have the same terminal side position.
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04:46
Coterminal Angles

General Formula for Coterminal Angles

The general expression for all angles coterminal with a given angle θ is θ + 360°n, where n is any integer. This formula accounts for all possible rotations around the circle, both clockwise and counterclockwise.
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04:46
Coterminal Angles

Integer Parameter n

The variable n represents any integer (positive, negative, or zero) and indicates the number of full 360° rotations added or subtracted. This allows the formula to generate infinitely many coterminal angles by varying n.
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05:59
Eliminating the Parameter