Angles (1978)
Discusses measuring angles and their relationship to distances, particularly in calculating the height of a tree. It explains how angles can be measured using the ratio of arc length to radius in a circle, leading to the concept of radians. The speaker introduces the tangent function in trigonometry, which relates the height of a tree to the distance from the observer. By measuring the angle to the top of the tree and applying the tangent ratio, the height can be calculated. The speaker demonstrates this process using a specific angle measurement and concludes with an estimation of the tree’s height.
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