| utf09-004
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| utf10-008
|
| utf11-004 A revolving beacon from a light house shines on the straight shore, and the closest point on the shore is a pier one half mile from the lighthouse. Let $\theta$ denote the angle between the lighthouse, pier, and point on the shore where the light shines. |
| utf13-007 Two cars, car $A$ traveling east at $30 mph$ and car $B$ traveling north at $22.5 mph$, are heading toward an intersection I. At what rate is the angle $IAB$ changing at the instant when cars $A$ and $B$ are 300 feet and 400 feet, respectively, from the intersection? |
| utf13-008
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