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Relating three sides and an angle for any triangle

(+) Prove the Laws of Sines and Cosines and use them to solve problems.

(+) Understand and apply the Law of Sines and the Law of Cosines to find unknown measurements in right and non-right triangles (e.g., surveying problems, resultant forces).

https://schoolyourself.org/page/lti/sy/trigonometry/law-of-cosines

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