Question

ABC is a triangle with a right angle at A:AD is the perpendicular on BC. prove that the resultant of the force 1/AB acting along AB and 1/AC acting along AC and 1/AD acting along AD​

Answer 1

Answer:

ABC

is triangle, right angled at A. The resultant of the forces acting along

with magnitudes

and respectively is the force along

where D is the foot of the perpendicular from A onto BC. The magnitude of the resultant is-