Mathematics, 13.07.2019 23:30, zubaira5798

Will award brainlist to whoever has all the correct calculations! using the law of cosines, write an algebraic proof to show that the angles in an equilateral triangle must equal 60°. use "∧" to indicate exponents. for example, type a2 as a∧2. (hint: let s be a length of each side and x be the angle measure; then use these variables in the law of cosines.)

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Will award brainlist to whoever has all the correct calculations! using the law of cosines, write...