LoC Activity (special case: right triangle)

1. Find AD and BD and use these to find the areas of the shaded rectangles.

2. Use your work to compute c² another way. Write your answer here c² = ______.

3. Be sure the slider is adjusted to get a right triangle. Then compute cosB and cosA in terms of the triangle's side lengths.

4. Substitute your answers to (3) into your equation in (2). What do you get for c²? Click all three check boxes to see result geometrically.