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Heights and Distances — Part 1: Angles of elevation and depression, one right triangle

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Lesson

Heights and Distances, Part 1

A tower, a rope or a roof: draw the right triangle, then use a ratio.

In this lesson you will

  • Draw a labelled figure and mark angles of elevation and depression
  • Read exact values and four-place table values
  • Find a height or a distance with one right triangle
  • Allow for eye height and state the precision
The angle of elevation at $P$ and the angle of depression at $T$ are both $30^\circ$.