In rectangle ABCD, shown here, CE is perpendicular to BD . If BC = sqrt(3) and DC = 2, what is CE?
+37191 Angle EDC = arctan (sqrt(3)/2) = 40.9 degrees
then angle ECD = 180 - 90 - 40.9 = 49.1 degrees
cos (ECD) = adj / hyp
cos (49.1) = EC / 2
EC = 1.3 units
