Each learning path is one chapter: a guided route through a topic, one small course at a time. Pick a class to see its chapters in order.
How tall is a tree, a tower or a cliff, when you cannot climb it with a tape? Stand at a distance, measure one angle, and trigonometry gives the height. Surveyors, pilots and sailors use this every day. In this chapter you turn a real scene into a right triangle, use tangent, sine and cosine to find heights and distances, and solve problems that need two triangles. Python draws the scene and solves it.