Mathematics, 03.07.2019 16:30 johnnny7495
David proved the law of cosines with reference to ∆abc using a different method. arrange the steps of his proof in the correct sequence. (on simplification) therefore, . (on simplification) (transitive property) similarly, prove that and . (on simplification) in , (pythagorean theorem) in , (pythagorean theorem) draw a perpendicular, , from b to side ac. let and . therefore, .
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