[size=150][size=200][b]Move the slider to get a right triangle.[/b][/size][/size]
[size=200][b][color=#0b5394]Click the first check box. [/color][/b][/size]
[b][size=200]1. Find AD and BD and use these to find the areas of the shaded rectangles.[/size][/b]
[size=200][b]2. Use your work to compute [/b][b]c[sup]2[/sup][/b][b] another way. Write your answer here [/b][b]c[sup]2 [/sup][/b][b]= ______.[/b][/size]
[size=200][b][color=#1c4587]Unclick the first check box. [/color][/b][/size]
[b][size=200]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.[/size][/b]
[size=200][b]4. Substitute your answers to (3) into your equation in (2). What do you get for [/b][b]c[sup]2[/sup][/b][b]? Click all three check boxes to see result geometrically.[/b][/size]