다음을 풀어보세요: -cos(180^circ-120^circ) | Microsoft Math Solver

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계산

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퀴즈

다음과 비슷한 문제 5개:

비슷한 문제의 웹 검색 결과

https://www.quora.com/How-can-I-find-the-value-of-cos-15-circ-+-cos-255-circ-without-knowing-the-individual-values

https://socratic.org/questions/how-do-you-use-the-sum-to-product-formulas-to-write-the-sum-or-difference-cos120

https://socratic.org/questions/how-do-you-find-the-exact-value-of-cos-120-circ-45-circ

https://math.stackexchange.com/questions/1861636/evaluate-cos-36-circ-cos-72-circ-without-the-aid-of-a-calculator

https://socratic.org/questions/how-do-you-find-the-exact-value-of-cos-120-circ-cos-45-circ

https://socratic.org/questions/how-do-you-use-the-product-to-sum-formulas-to-write-10cos75-circcos15-circ-as-a-

공유

클립보드에 복사됨

-\cos(60)

180에서 120을(를) 빼고 60을(를) 구합니다.

-\frac{1}{2}

삼각법 값 표에서 \cos(60) 값을 가져옵니다.

예제

이차방정식

일차방정식

연립방정식