Question 4\ Hint 1 Hint 2\ For vectors

vec(B)=-4widehat(x)-5hat(y)

and

vec(A)=-7widehat(x)-2hat(y)

calculate:\ (1)\ a.

vec(A)+vec(B)=

widehat(x)+

hat(y)

\

|vec(A)+vec(B)|=

\ Direction in degrees relative to

+x

-axis:\ b.

vec(A)-vec(B)=

\

widehat(x)+

\

hat(y)

\

|vec(A)-vec(B)|=

\ Direction in degrees relative to

+x

-axis:

For vectors B=4x5y^ and A=7x2y^ calculate: a. A+B= x+ y^ A+B= Direction in degrees relative to +x-axis: b. AB=AB=x^+y^ Direction in degrees relative to +x-axis