please answer the questions, answer letter only, no need solution

1 If any of three vectors A, B, and C are added in order, and the head of C ends on the tail of A, the resultant of the vectors is (2 Points) O equal to (A^2 - B^2 - C^2) O the hypotenuse of a triangle O zero O equal to vector CVecter A makes an angle of 2? degrees with the xaxis and has an xcampenent {if 25 N. What is the magnitude {if A? * [I], [2 Paints} 0 None of these 3 The vector - A is: * (2 Points) O greater than A in magnitude less than A in magnitude in the same direction as A in the direction opposite to AA student exerts a force of ?2N along the handle of a lawn mower to push it across the lawn. Find the horizontal component of this force when the handle is held at an angle with the lawn of 3D degrees. * [2 Points} The vectors a, b and c are related by c = b a . Which diagram below illustrates this relationship? * [2 Points) 37 a: iflf .. 35'5 .. i 3" c c E E E n A B C D O A O B O C