6.02b Assesment - 6.02b Applying the Laws of Sines and...

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6.02b Applying the Laws of Sines and Cosines LAW OF COSINES a = b^2 + c^2 – 2bc cos(A) The cosine rule may be applied to any triangle where A is the angle opposite of side a. The rule allows you to find the length of any side. Very similar to Pythagorean Theorem, a^2 + b^2 = c^2, which only works for right triangles, The Law of Cosines woks for any triangle because of the added -2ab cos(C) LAW OF SINES a/sin(A) = b/sin(B) = c/sin(C) Where a, b, and c are sides Where A, B, and C are angles The law of sines works for any triangle to find an unknown side or angle. When trying to find an unknown triangle you turn the fractions upside down, so instead

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