Work, Scalar Projection and Diagonal of a Cube
46. Find the work done by a force of 20 lb acting in the direction N50°W in moving an object 4 ft due west. 49. Use a scalar projection to show that the distance from a point P1(x1, y) to the line ax + by + c = 0 is... Use this formula to find the distance from the point (?2, 3) to the line 3x ? 4y + 5 = 0. 50. Find the angl