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Ch. R - Algebra Review
Lial - Trigonometry 12th Edition
Lial12th EditionTrigonometryISBN: 9780136552161당신이 사용하는 게 아니라요?교과서 변경
1장, 문제 3

CONCEPT PREVIEW Fill in the blank(s) to correctly complete each sentence. The opposite, or negative, of a number is its _______.

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This problem is about understanding the concept of the opposite, or negative, of a number, which is a fundamental idea in mathematics but not directly a trigonometry problem.
The opposite of a number refers to the value that, when added to the original number, results in zero. This is also known as the additive inverse.
For example, the opposite of a positive number is its negative counterpart, and the opposite of a negative number is its positive counterpart.
In mathematical terms, if the number is \(x\), then its opposite is \(-x\), because \(x + (-x) = 0\).
Therefore, the blank should be filled with the term 'additive inverse' or simply 'additive inverse of the number'.

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주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Opposite (Additive Inverse) of a Number

The opposite of a number, also called its additive inverse, is the number that when added to the original number results in zero. For example, the opposite of 5 is -5 because 5 + (-5) = 0.
추천 영상:
4:49
Inverse Cosine

Negative of a Number

The negative of a number is the value with the same magnitude but opposite sign. It is essentially the number multiplied by -1. For instance, the negative of 7 is -7.
추천 영상:
5:02
Multiplying Complex Numbers

Number Line Representation

On the number line, the opposite of a number is located the same distance from zero but in the opposite direction. This visual helps understand why opposites have equal magnitude but different signs.
추천 영상:
3:31
Introduction to Complex Numbers