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Law of cosines

math Maturity 7-9

Shapes like triangles are everywhere.

Triangle with notations 2.svg
Triangle with notations 2.svg
You can use math to find a missing side. It helps you know how long a side is. You can also find a corner's size. This math is very helpful. Do you like shapes?

43 words
🖼️ Images & Media (18)
File:Triangle with notations 2.svg
Triangle with notations 2.svg
File:triangle-with-an-unknown-angle-or-side.svg
triangle-with-an-unknown-angle-or-side.svg
File:SSA triangle ambiguity.png
SSA triangle ambiguity.png
File:Obtuse Triangle With Altitude ZP2.svg
Obtuse Triangle With Altitude ZP2.svg
File:Law of cosines following al-Kashi.png
Law of cosines following al-Kashi.png
File:Law of cosines in plane trigonometry.svg
Law of cosines in plane trigonometry.svg
File:Obtuse Triangle With Altitude ZP.svg
Obtuse Triangle With Altitude ZP.svg
File:Triangle with trigonometric proof of the law of cosines.svg
Triangle with trigonometric proof of the...
File:Triangle-with-cosines.svg
Triangle-with-cosines.svg
File:Triangle-law-of-cosines-proof.png
Triangle-law-of-cosines-proof.png
File:Ptolemy cos.svg
Ptolemy cos.svg
File:law of cosines with acute angles.svg
law of cosines with acute angles.svg

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📚 Content adapted from Wikipedia | Readability: FK 12.3 | Vital Level 5