1976 AHSME Problems/Problem 17
Problem 17
If is an acute angle, and , then equals
Solution
Let , so we want to find . First, square the expression to get . Recall that and . Plugging these in, the equation simplifies to . Given that , the equation becomes . Take the square root of both sides to get .
Hence, the answer is ~jiang147369
See Also
1976 AHSME (Problems • Answer Key • Resources) | ||
Preceded by Problem 16 |
Followed by Problem 18 | |
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