Difference between revisions of "University of South Carolina High School Math Contest/1993 Exam/Problem 13"
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<math>(1)+(2)</math> yields <math>2\sin{x}\cos{y}=.8</math> and our answer is <math>.4</math>. | <math>(1)+(2)</math> yields <math>2\sin{x}\cos{y}=.8</math> and our answer is <math>.4</math>. | ||
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− | * [[University of South Carolina High School Math Contest/1993 Exam]] | + | |
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[[Category:Intermediate Trigonometry Problems]] | [[Category:Intermediate Trigonometry Problems]] |
Latest revision as of 12:22, 23 July 2006
Problem
Suppose that and are numbers such that and . Then
Solution
Expanding and , we have:
yields and our answer is .