Tamara is making a large omelet and needs 1/ 2 cup of chopped tomatoes. She only has a 1 /8 -cup measuring cup. How many times s
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<u>Prove that:</u>
<u>Proof: </u>
We know that, by Law of Cosines,
<u>Taking</u><u> </u><u>LHS</u>
<em>Substituting</em> the value of <em>cos A, cos B and cos C,</em>
<em>On combining the fractions,</em>
<em>Regrouping the terms,</em>
LHS = RHS proved.
