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AMC (AIMO validation set) / Let M be the midpoint of (AB)¯ in regular tetrahedron ABCD. (p)/(q)=cos(∠CMD) is irreducible fraction, what is the value of p+q? · Discussion
Discussing Let M be the midpoint of (AB)¯ in regular tetrahedron ABCD. (p)/(q)=cos(∠CMD) is irreducible fraction, what is the value of p+q? · AMC (AIMO validation set)
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