TLF ID L2333
Solve measurement problems involving right-angled triangles by using similar triangles and trigonometric methods, including cosine values. Identify corresponding sides and ratio relationships in similar triangles. Solve measurement problems by using cosine values to calculate side lengths in triangles. For example, find the width of a moat, given one angle and distance to the top of a castle. This learning object is one in a series of ten objects.