11: The Law of Sines and The Law of Cosines

College Algebra and Trigonometry · LibreTexts

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    From LibreTexts, under CC BY-NC-SA 4.0, as the source states it; its equations are written in TeX, which the PDF shows typeset. This page at LibreTexts.

    Previously, we used the fundamental trigonometric relationships in right triangles to find unknown distances and angles. Unfortunately, in many problem solving situations, it is inconvenient to use right triangle relationships. Therefore, from the right triangle relationships, we can derive relationships that can be used in any triangle.

    Thumbnail: Law of cosines with acute angles. (CC BY SA 3.0 Unported; Scaler via Wikipedia)

    This page titled 11: The Law of Sines and The Law of Cosines was last modified on Wed, 06 Oct 2021 15:17:02 GMT and is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by Richard W. Beveridge.