Using basic triangles 3-4-5 RIGHT TRIANGLES, 30o-60o-
RIGHT TRIANGLES, and 45o-45o-RIGHT TRIANGLES,
students collect data, form ratios and discover that the ratios
have special names: sine, cosine, and tangent.
The lesson is designed to be used as a class or in groups.
Study 1-3 can be divided among groups and then data can
be collected and everyone works on Study 4 together.
The lesson can be spread over two days. The Bring It All
Together can be used as an assignment. Another
assignment is also included.