Section+4.5

Section 4.5 The Law of Cosines I Solving Oblique Triangles Using the Law of Cosines Definition: The Law of Cosines II. The Area of a Triangle Definition: Area of a Triangle Asas= 1/2bcsina Asas = 1/2absinc Asas = 1/2acsinb

III. Area of a Triangle Definition: Area of a Triangle (SSS case - Heron's Formula) A(sas) = square root of s(s-a)(s-b)(s-c) also, the other formula that follows can be summed up as S = a + b + c/2

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