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Thursday, Jan 24, 2013 - 1:00 AM    "Video 5. Indirect Measurement and Trigonometry" Learn how to use the concept of similarity to measure distance indirectly, using methods involving similar triangles, shadows, and transits. Apply basic right-angle trigonometry to learn about the relationships among steepness, angle of elevation, and height-to-distance ratio. Use trigonometric ratios to solve problems involving right triangles. D
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