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Find T Such That 0 ≤ T ≤ π and Cos

question 72

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Find t such that 0 ≤ t ≤ π and cos t = cos (2π3)\left( - \frac { 2 \pi } { 3 } \right) .
Enter just a reduced quotient of form ab\frac { a } { b } with π in the numerator (unlabeled).


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