part 1 of 2 Two vectors A and B, are lying in the xy plane and given by A = Axi +Ayj B = Bxi +Byj (x y are subscripts) where A x = 4.4 m, A y = 1.74 m, B x = 7.58 m, B y = -6.76 m. Let R = A+B. Find the magnitude of R. Answer in units of m. So it is A = 4.4mI + 1.74mJ B = 7.58mI - 5.02J I have found out R by using the distance formula sqrt(11.98^2 + 5.02^2) = 12.9893 m(which is right) part 2 of 2 Find the angle that the vector R makes from the positive x axis. Choose your answer to be between -180 # and +180 # . The positive an_ gular direction is counter clockwise measured from the x axis. Answer in units of # . I tried this problem using the cosine law. -5.02squared-11.98squared-12.99squared ______________________________________(division) -2*11.98*12.99 I got 22.73 degrees. But when I sumbit this answer, it says I'm wrong. Can you figure out what I'm doing wrong?