posted by Sam .
what displacement must be added to a 50 cm displacement in the +x direction to give a resultant displacement of 85 cm at 25 degrees?
(i know the ans, just need to know how to get the ans)
Take the resultant, figure the vertical and hoizontal component of the resultant.
horizontal 85 cos25
So the added displacement must supply
vertical 85 sin 25
horizontal 85 cos25 -50cm
use these components to get the displacement and angle.