1984 AHSME Problems/Problem 23
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Problem
equals
Solution
From the sum-to-product formulas, we have . So, . Also from the sum-to-product formulas, we have , so . Substituting these back into the original fraction, we have .
See Also
1984 AHSME (Problems • Answer Key • Resources) | ||
Preceded by Problem 22 |
Followed by Problem 24 | |
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