Why , when found , was genie unable to speak coherently or understand language

What is the length x of the side of the triangle below? (hint: use the cosine function)

The law of conservation of energy states that energy cannot be created or , energy can be from one substance to another. the first blank is ' destroyed ' and for the second blank is ' transferred '

In a given chemical reaction, the energy of the products is greater than the energy of the reactants. which statement is true for this reaction?