Move [color=#0000ff]point C[/color] so that [color=#0000ff]angle A becomes larger and smaller[/color].[br][b]What do you notice about how this affects the [color=#0000ff]length of the opposite side BC[/color]?[/b]
As the measure of angle A gets larger, the opposite side BC gets larger as well. As angle A gets smaller, BC gets smaller as well.