distance

Problem 230
For the truss shown in Fig. P-230, compute the perpendicular distance from E and from G to the line BD. Hint: Imagine a force F directed along BD and compute its moment in terms of its components about E and about G. Then equate these results to the definition of moment M = Fd to compute the required perpendicular distances.
 

Problem 50
Find the shortest distance from the point (4, 2) to the ellipse x² + 3y² = 12.
 

Problem 48
Find the shortest distance from the point (5, 0) to the curve 2y² = x³.