A force vector points at an angle of 78.2 ° above the +x axis. It has a y component of +190 newtons (N). Find (a) the magnitude and (b) the x component of the force vector.

Answer 1

If the vector has magnitude v, then
v sin78.2° = 190
and then x = v cos78.2° (or, x^2 + 190^2 = v^2)