A nice question for all you mathematicians out there. Is there a formula for working out "widescreen" dimensions from the diagonal, the reason I ask is I want to replace the 4:3 tv in the bedroom for a lcd widescreen and would like to keep the same height .... I don't want to look an idiot going round the stores with a measuring tape. eg. 17" widescreen works out about 14.75" x 9" (w x h) tia, nal.