[size=150][size=200][b]Move the slider so the triangle is obtuse.[/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][color=#1c4587]Unclick the first check box. Click the second check box.[/color][/b][/size]
[b][size=200]2. Find cos(180-C) and use it to find CE. Then find cosB (hint: to find cosB, make use of CE).[/size][/b]
[size=200][b][color=#0b5394]Click the third check box; unclick the others.[/color][/b][/size]
[b][size=200]3. Find cos(180-C) and use it to find CF. Then find cosA (hint: to find cosA, make use of CF).[/size][/b]
[size=200][b]4. Use your work in (1) to compute [/b][b]c[sup]2[/sup][/b][b] two ways. Then substitute your answers in (2) and (3) to rewrite your answer. What do you get for c[sup]2[/sup]?[/b][/size]